The use of urine sediment analysis is important for the diagnosis of glomerular hematuria. Red blood cells (RBC) casts, beautifully illustrated by @jrseltzer in last month's post, usually confirm glomerular hematuria - but this is a rather special finding. Much more commonly, the diagnosis relies on the presence of dysmorphic, or glomerular-type, RBCs in the urine Sediment. Home / Urine / Sediment. Wat is een urinesediment? Bij een urinesediment wordt er gekeken naar niet oplosbare stoffen in de urine. Stoffen die in de urine terug te vinden zijn worden vaak via de nieren uitgescheiden uit het bloed
-RODE BLOEDCELLEN IN DE URINE . Elke macroscopische zelfs microscopische hematurie bij de man (> 5 RBC/ veld) vereist verder urologisch onderzoek. Bij de vrouwen kan dit het gevolg zijn van contaminatie uit de vagina of menstruatie. Indien een gynaecologische oorzaak uitgesloten wordt, is hier ook een verder urologisch nazicht vereist Automated urine technology and centralized laboratory testing are becoming the standard for providing urinalysis data to clinicians, including nephrologists. This trend has had the unintended consequence of making examination of urine sediment by nephrologists a relatively rare event. In addition, the nephrology community appears to have lost interest in and forgotten the utility of provider. Normale urine heeft een soortelijk gewicht (sg) van circa 1010 g/L. Zuiver water heeft een sg van 1000 g/L. Is het sg van urine sterk verhoogd, dan is de urine sterk geconcentreerd en kan er sprake zijn van dehydratie. Het sg zegt iets over de hoeveelheid stoffen in de urine. Hoe hoger de dichtheid, hoe meer vast materiaal in de urine De Santo NG, Nuzzi F, Capodicasa G, et al. Phase contrastmicroscopy of the urine sediment for the diagnosis of glomerular andnonglomerular bleeding - data in children and adults with normalcreatinine clearance. Nephron 1987; 45: 35-9. Pollock C, Lui PL, Gyory AZ et al. Dysmorphism of urinaryred blood cells - value in diagnosis
Hierbij wordt de urine in een centrifuge afgedraaid zodat alle deeltjes (cellen, kristallen, cilinders etc) door de kracht van de centrifuge zich op de bodem van de buis bevinden (sediment). Een kleine druppel van dit sediment wordt vervolgens onder de microscoop geanalyseerd op de aanwezigheid van bacteriën, rode en witte bloedcellen deze cellen zijn afkomstig van de nieren Evaluation of Urine Sediment. Microscopic evaluation of urine sediment is done both at low power (X10 objective, lpf) and high power (X40 objective, hpf). Normal urine sediment contains less than 5 RBC/hpf (seen often in cystocentesis samples) and 5 WBC/hpf, (seen often in voided samples). Voided samples also may contain squamous epithelial. Is de urine alkalisch (pH > 6,5), dan bestaat het amorf zout uit fosfaatkristallen die in oplossing gaan door een druppel 10 azijnzuuroplossing aan het sediment toe te voegen. Is de urine zuur (pH < 6,0), dan gaat het om uraatkristallen die gewoonlijk door verwarmen van het sediment tot 40 à 50°C (bijvoorbeeld onder een lopende kraan) in oplossing gaan . Urine sediment normally contains fewer than 2-3 RBCs/HPF. RBCs are small cells that may have several different appearances, depending on the urine concentration (e.g., specific gravity) and the length of time between collection and examination (Figures 23-4 to 23-9).In fresh samples that have intermediate specific gravities, RBCs usually have smooth edges and are yellow to orange Additionally, some foods and medications might give the urine an unusual tint that could potentially be mistaken for blood, or possibly interfere with dipstick test results for RBCs and WBCs. See your doctor without delay if you notice visible blood in your urine or experience signs or symptoms suggestive of a urinary tract or reproductive system infection or disease, including
Characteristic Urine Sediments. The urine sediment is a rich source of diagnostic information. Occasionally, a single finding (for example, cystine crystals) is pathognomonic. More often, the sediment must be considered as a whole and interpreted in conjunction with clinical and other laboratory findings. Several patterns bear emphasis Sample Freshly voided urine is the best sample. If delayed, then refrigerate the urine. The best volume to the centrifuge is 10 to 12 mL. Procedure Centrifuge the Urine, and clear supernatant is removed and leaves the uniform volume of sediment, usually 1 mL. The recommended t . Sediment, or particles, in your urine, can make it look cloudy. In many cases, sediment can only be detected by a clinical.
IDEXX Urine Sediment Guide Interpretation (Expected Values) Analyte Normal Reporting Results WBC 0-5/HPF Number/HPF RBC 0-5/HPF Number/HPF Epithelial Cells -Few/HPF Number/HPF Crystals Variable Number/LPF Casts -Few/LPF Number/LPF Bacteria -Few/HPF 1+ to 4+/HPF IDEXX UA™ Strips Test Menu Description Interpretatie. Vanaf 2.5 x10^3 RBC/µL wordt hematurie macroscopisch zichtbaar, dit correspondeert met 150 cellen per veld. Theoretisch kan men hematurie van hemoglobinurie differentiëren dmv centrifugatie maar RBC lyseren snel in hypotone urine Urine sediment refers to all of the solid materials that are suspended in the urine. Microscopic urine sediment monitoring is especially helpful in determining the existence of disease in the kidney and urinary tract. The appearance of microscopic examination of such findings may help to clarify irregular physical and chemical studies
RBC's may appear normally shaped, swollen by dilute urine (in fact, only cell ghosts and free hemoglobin may remain), or crenated by concentrated urine. Both swollen, partly hemolyzed RBC's and crenated RBC's are sometimes difficult to distinguish from WBC's in the urine. In addition, red cell ghosts may simulate yeast Urine sediment: 檢驗代號: L72-703 RBC：正常尿液中可能出現少量RBC,當泌尿系統出血或有腫瘤時,尿中易出現大量RBC,稱為血尿(hematuria). . Hierbij wordt de urine in een buis gecentrifugeerd waardoor alle deeltjes (sediment) naar de bodem van de buis gaan 1. 紅血球(RBC)：正常尿液會有少許，但數目增加時可能是病理性。 2. 白血球(WBC)：正常尿液會有少許，大量存在可能發炎、結石、腎臟、泌尿道感染。 3. 上皮細胞(Epithelial)：多量時顯示有尿路炎症或腎炎。 4. 圓柱體(Cast)：正常尿液可能有少量存在，大量出現在腎. Sediment in urine is discovered during urine testing and refers to microscopic gritty particles or mucus in the urine.These particles floating in the urine are often comprised of different cell.
• White blood cells (WBC) in unstained urine sediments typically appear as round, granular cells which are1.5-2.0 times the diameter of RBC. The details of nuclear shape often are difficult to discern, especially if the specimen is not fresh. WBC in urine are most commonly neutrophils. Staining of air-dried sediment Net zoals RBC dienen WBC bevestigd te worden aan de hand van het sediment. Discrepanties tussen dipstick en sediment RBC. Oud staal of overcentrifugatie, gelyseerde RBC en brokstukken worden niet microscopisch niet waargenomen. Urine niet of onvoldoende opgemengd. WBC. Valse negatieven voor de dipstick zijn te verwachten bi
the urine sediment. Some antimicrobials may precipitate in the urine, which can lead to the development of unfamiliar crystals in the urine sediment. Sequentially collected urine samples may be of special value in an animal whose condi-tion is changing over time. RBC WBC).).. U rine Sediment Guide All images from the SediVue Dx® Urine Sediment Analyzer Reference bar = 20 microns Figure 18. Numerous small struvite crystals Blood cells Casts Crystals Figure 13. Figure 14.Left and right, hyaline cast Figure 19. Large calcium oxalate dihydrate crystals Figure 23. Ammonium biurate (thorn apple) crystals Figure 27. Uric. RBCs in the urine suggests infection, trauma, tumors, renal calculi, etc. However, the presence of 1 or 2 RBC per high power field (hpf) in the urine sediment, or blood in the urine from menstrual contamination, should not be considered abnormal. WBCs White blood cells in the urine (pyuria) may originate from any part of the renal system In het onderzoek wordt het sediment (niet opgeloste elementen) in de urine met de hulp van een microscoop bekeken. Normaal gesproken bevat urine nauwelijks sediment. Er wordt met name gekeken naar rode en/of witte bloedcellen die bij ontsteking of beschadiging van de nieren, blaas of urineleiders in de urine aantoonbaar zijn Urine samples with individual yeast cells (conidia) and budding yeast cells are not common but, we knew from our experience with the Sysmex UF-100, that when present they are confused with RBC. Therefore to challenge sediMAX, urine samples containing conidia and budding yeast cells were created by the addition of cultured yeast colonies
Sediment in urine refers to gritty particles, mucus, white or red blood cells, that can be detected in a urine test or that give urine a cloudy look. Normal urine usually contains traces of invisible sediment or particles that can only show up in a urinalysis In acidic pH *inorganic salts ppts in neutral & alkaline sol'n *except: CaOx ppts in acidic & neutral urine Normal Crystal Seen in Acidic Urine Crystal Color & Shape Solubility Appearnce Uric Acid Yellow-brown Alkali (rhombic/4- Soluble sided/rosette) Amorphous Brick dust or Alkali and urates yellow brown heat granules Calcium Colorless Dilute HCl oxalate (envelopes, oval, [Acid/neutral. This is a microscopic examination of the post-centrifugation urine sediment. Casts are enumerated at 10x (LPF). WBC, RBC, epithelial cells, crystals, and bacteria are enumerated at 40x (HPF). It can be very useful to make an air-dried (using a fan) urine sediment preparation and stain it with Diff-Quik to help identify cell types and bacteria. [
RBC - Normal: 0 - 1 per hpf - Presence indicates damage to urinary tract (e.g., infection, physical trauma, etc.) - May have bacteria in urine without having an active infectio Sediment should be viewed first under low power magnification (100). Normally, RBCs do not appear in the urine, although the presence of 1-2 RBC/HPF is usually not considered abnormal.8-11 The mechanism whereby red cells enter the urine is not entirely clear.12 Unlike white cells,. Squamous Epithelial Cell Largest cells found in the urine Contains abundant and irregular cytoplasm and prominent nucleus like an RBC size Often first structures observed when the sediment under LPO Uses LPO and HPO magnification Commonly reported as rare, few, moderate or many Appear folded, possible resembling cast and will begin to disintegrate in urine that is not fresh Originate. A STANDARDIZED METHOD FOR THE HANDLING OF URINE 3Second urine of the morning produced over a period of two hours 3Centrifugation of a 10 ml aliquot of urine for 10 min at 400g. 3Removal of 9.5 ml of supernatant urine 3Gentle but thorough resuspension by pipette of the sediment in the remaining 0.5 ml of urine 3Transfer by pipette of 50 µl of resuspended urine to a glass slid
Urinary sediment examination results depend on urine sampling and urinary sediment sample preparation methods. Here we will present some examples from day-to-day operations that would require appropriate actions to be taken or that are encountered relatively frequently. 1. Types of urine specimen New auto-evaluation feature: Ghost RBC flag, RBC-Aca flag. Urised Cuvette The only consumable of the UriSed 3 PRO sediment analyzer is the UriSed Cuvette, which is a one-time use high optical quality polycarbonate chamber. Cuvettes are stored in containers of 50 pieces RBC in urine sediment. Transitional epithelial cell. WBC in urine. WBC in urine Epithelial cell (arrow) Neoplastic cell (arrow) and RBC. Magnesium ammonium phosphate crystals typically have a coffin shape and are quite large. There are also some RBC (faint round cells) in this image of a wet preparatio History of patient: A 28 years female with history of fever, Lower abdomen pain , burning during urination feeling unusual was brought in hospital of emer.. Urine sed Scale Qn Method Microscopy.light.HPF Additional Names Short Name RBC #/area UrnS HPF Display Name RBC LM.HPF (Urine sed) [#/Area] Consumer Name Alpha Red Blood Cell (RBC) Count, Urine Sediment Basic Attributes Class UA Type Laboratory First Released Version 1.0k Last Updated Version 2.40 Order vs. Observation Observation Common US Lab.
Urine Sediment: 檢體種類: Random Urine或依醫囑指示採檢之urine: 尿液沉渣檢驗 檢驗方法: 顯微鏡檢查: 送檢時間: 00:00-24:00: 採檢方式: 有蓋定量離心管: 操作時間: 00:00-24:00: 參考值 (91/09/05以前) RBC 0-2 /HPF WBC 0-5 /HPF Epithelial 0-5 /HPF Hyaline cast 0-2 /LPF: 核發報告時間: 急 診：40. Haber, Meryl H. Urinary Sediment: A Textbook Atlas.American Society of Clinical Pathologists. Chicago, 1981. Lillian Mundt, Kirsty Shanahan, Graff's Textbook of Routine of Urinanalysis and Body Fluids, 2nd edition, Lippincott Williams & Wilkins, Philadelphia, 2011. External links. Urine Casts - different types and what they mean. - Good description of various cast forms
Urine Sediment. Being able to review a fresh urine sediment can provide you with lots of pertinent information when it comes to renal-urinary tract pathology. It's best to use a fresh sample i.e. reviewed preferrable within minutes of collection Active Urinary Sediments • Indicates inflammation in the glomerular capillary wall • The sediments are: • Red blood cells/casts • White cells/casts 45. Approach to a patient with RBCs or RBC casts in urine HEMATURIA 46
We determined the overall performance of the chemical UA using the microscopic UA as the designated reference method ().Out of 9127 urine samples subjected to both chemical and microscopic UA, 6020 (66.0%) were deemed positive by the chemical criteria described above, while 3892 of the 6020 were also positive by the microscopic method (64.7% PPV) Increase in urine pH (alkaline urine) may result from urinary tract infections with urease producing bacteria (that convert urea to ammonia). Alkaline urine in a dog or cat should prompt an evaluation to determine if white cells and/or bacteria are present (often evident in urine sediment). Role of Diet The number of WBCs in urine sediment is normally low (0-5 WBCs per high power field, HPF). WBCs can be a contaminant, such as those from vaginal secretions. An increased number of WBCs seen in the urine under a microscope and/or positive test for leukocyte esterase may indicate an infection or inflammation somewhere in the urinary tract Urine Sediments : Uploaded: 2008-02-08, Updated: 2008-02-08 : Cells : Description: Associated • Pale or yellowish, smooth biconcave disk • No nucleus or cytoplasmic granules • Normal: Less than 2 RBC/HPF • Can originate from any part of the urinary tract • In females • Maple syrup urine disease, Oasthouse urine.
After the urine sediment is examined for bacteria, casts, crystals, and epithelial cells, it is assessed under a high power field (HPF) for the presence of red and white blood cells. Normally, there should be only an occasional red blood cell in the urine (2-3 per high power field) The urine sample is sent to a lab for analysis. You can return to your usual activities immediately. Results. For a urinalysis, your urine sample is evaluated in three ways: visual exam, dipstick test and microscopic exam. Visual exam. A lab technician examines the urine's appearance. Urine is typically clear Clinical urine tests ( also known as urinalysis, UA) is an examination of urine for certain physical properties, solutes, cells, casts, crystals, organisms, or particulate matter, and mainly serves for medical diagnosis. The word is a blend of the words urine and analysis. Urine culture (a microbiological culture of urine) and urine electrolyte levels are part of urinalysis The urine sediment must be reported qualitatively (types of cells, cylinders, crystals, organisms) and quantitatively (number of cylinders per small increase field and / or cells per high increase field). At least 10 to 20 microscopic fields must be observed and an average range reported Cytology of urine sediment is indicated if there is reason to suspect a tumor in the lower urinary segment. For malignant processes in the kidneys, this procedure is not informative. Standardly designate a general blood test with the calculation of ESR, the determination of blood urea nitrogen, as well as creatinine in blood serum
Urine sediment may also contain white blood cells (WBCs). Most of the WBCs in urine are segmented neutrophils. Since it is possible that lymphocytes, monocytes, and/or eosinophils may be present, the cells in urine can be stained if it is necessary to differentiate them urine, but as the filtered examination of the urinary sediment can distinguish Microscopic exami-nation also may detect RBC casts or dysmorphic RBCs. Hematuria is divided into glomerular. Describe the correct preparation of the urine sediment. Recognize cells, casts, bacteria, yeast, crystals, and other structures that may be present in urine sediment. Recognize artifacts in urine sediment and distinguish from significant findings. Correlate microscopic findings with urine reagent strip findings will a urine spg of 1.010 provide a valid dipstick urinalysis for wbc and rbc, and other components on the dipstick? are neg results valid w this spg? Answered by a verified doctor: YES: normal dipstick results Urine Sediment Examination in the Diagnosis and Management of Kidney Disease: Core Curriculum 2019 Corey Cavanaugh and Mark A. Perazella Automated urine technology and centralized laboratory testing are becoming the standard for providing urinalysis data to clinicians, including nephrologists
Sediment. Door de urine een paar minuten af te draaien in een speciale centrifuge, zakken alle cellen naar de punt van het reageerbuisje. Dit kan onder de microscoop bekeken worden men kan dan de bacteriën en ontstekingscellen zien. Vroeger werd er wel een. First pic just cloudy, second pic same sample just left for 24 hrs. Camera flash used both pics. It really does amplify sediment particles. ~ R. W. Provided below is a series of pictures of what urine sediment looks like once the kidneys begin filtering at varying levels of efficiency. Click on any image to enlarge The urine chemistry analyzer offers a high-end pipetting system with ascorbic acid protected urine test strips. The urine sediment analyzer provides high-quality imaging results including automated identification and classification of urine particles that are verifiable on screen. The results are shown in an integrated customizable report Erythrocytes in urine. The presence of erythrocytes in urine is medically known as hematuria. As part of the normal process of elimination of dead and damaged erythrocytes, nearly 2.5 million erythrocytes are removed on a daily basis via urine. However, excessive release of erythrocytes in urine is considered dangerous and abnormal Leukocyten in urine. Leukocyten zijn witte bloedcellen, deze horen normaal gesproken niet in urine thuis. Als er wel witte bloedcellen in de urine zitten, kan dat duiden op een blaasontsteking of urineweginfectie. Urineweginfectie (UWI) Urineweginfectie is de algemene term voor een ontsteking van de urinewegen, blaas (cystitis) of plasbuis.
At least one published article, Nephron Clin Pract 2012;120:c36-c41, makes the case for distinguishing red cell shapes in urine sediment using phase contrast microscopy and states, it is important to note that for some of these patients, it was the finding of the unusual RBC in the urine sediment which initiated further clinical investigation that eventually led to the diagnosis of the. 요침사 Urine sediment 의 종류. 1) 유기침사. 1. 적혈구 RBC : 혈뇨 . 2. 벡혈구 WBC : 농뇨 . 3. 상피세포 Epithelial cell - 소원형세포 small round cell : 네프로제 또는 네프로제 경향이 있는 만성 신염일 경우 - 이행상피세포. URINE SEDIMENT EXAMINATION. Microscopy of the urine sediment is a very important aspect of the evaluation of patients with known or suspected kidney disease. Urinary sediment should be reported both qualitatively (types of cells, casts, crystals, organisms) and quantitatively.
Learn about RBC urine test, find a doctor, complications, outcomes, recovery and follow-up care for RBC urine test The RBC urine test measures the number of red blood cells in a urine sample. How the Test is Performed. A random sample of urine is collected. Random means that the sample is collected at any time either at the lab or at home. If needed, the health care provider may ask you to collect your urine at home over 24 hours Atlas of cells in urine, RBC, WBCs, epithelial cells, bacteria, Renal epithelial cells, tuyenlab.net, atlas in medical Figure 1. Hypotonic urine containing an R BC, several WBCs, two renal epithelial cells, and a transitional epithelial cell (5 00x) Figure 2 요검경 Urine Microscopy . 1. 적혈구(RBC): 형태는 얇은 원형으로 연한 황색이며 세포질 내에 핵이 없는 세포로 직경은7∼8 무기침사(Inorganic sediment) 결정체 (crystal) : 요중 염류의 배설은 체내에 있어서.
Rbc: Beide: alle: urine sediment - Epitheelcellen <25 cellen/µl: Epitheelcellen: Beide: alle: Ga terug Afdrukken. ZNA Labgids v1.3 (1.3.7272.28617 - 29/11/2019) - ©2019 ZNA Labo Bij problemen kan je contact opnemen met de ICT ServiceDesk via het volgende mailadres: 03 217 74 74.. R-CNN for construction of end-to-end urine analysis system. In addition, we would propose an effective baseline for RBCs and WBCs detection on urinary sediment images by using a pre-train Faster R-CNN model. In here, we expect both isomorphic RBC and dysmorphic RBC to be detected as RBC. The rest of the paper is organized as follows: Section Test Code 2126 Urine Sediment, UA Microscopic Only Methodology Microscopic only , WBCs, yeast, and others. Performing Laboratory St. Francis Medical Center Specimen Requirements Container/Tube: Plastic urine container Specimen Volume: 12 mL (minimum volume: .5 mL RBC UR. age 0-1 year 0-5 RBC/HPF. age >1 year. Pus cell, bacteria and RBC in urine of UTI patient. Pus cell, bacteria and RBC in urine of UTI patient as shown above picture. Pus is an exudate, typically white-yellow, yellow, or yellow-brown, formed at the site of inflammation during infection (bacterial or fungal )
Microscopy of the urine sediment is a standard component of the complete urinalysis and among the oldest tests in medicine. 1 Although in contemporary medical practice, urine microscopy is increasingly being performed in central laboratories by automated analyzers and technicians rather than clinicians, its interpretation continues to serve a role in the evaluation of patients with kidney. No RBCs in urine sediment—hemoglobinuria (hemolysis), myo - globinuria (rhabdomyolysis), lysis of RBCs in dilute and/or alka - RBC casts are indicative of glomerulonephritis, with leakage of RBCs from glomeruli, or severe tubular damage (rare) (Fig. 1.8) Urine casts are cylindrical, cigar-shaped structures produced by the kidney and present in the urine in certain disease conditions. All casts are composed of a mucoprotein known as Tamm-Horsfall protein which is secreted by the distal loop of Henle, the distal tubule and the collecting ducts at a fairly constant rate. A significant number of urinary casts usually indicates the presence of.
Different types of casts found in urine sediment represent different physiologic and clinical conditions.Urinary casts can be divided into two main categories; Cellular casts and Acellular casts. Hyaline cast is a type of acellular cast Figure 22 Left: Fat droplets (red arrows, RBC); Right: Sperm Urine Sediment Guide Figure 21 Drug (Tribrissen™) crystals 10x objective field of view Figure 23 Pearsonema plica Figure 24 Contaminant fragmented fiber Images and information provided by: Dennis B. DeNicola, DVM, PhD, DACVP Rick L. Cowell, DVM, MS, MRCVS, DACVP Michelle Frye, MS, DV
Organizovani sediment urina predstavlja: broj prisutnih leukocita, eritrocita, epitelne ćelije, cilindri, bakterije, gljivice, paraziti, spermatozoidi. Neorganizovani sediment urina sadrži kristale raznih soli (oksalatne, fosfatne, uratne i dr.). Klinički značaj organizovanog dela sedimenta mnogo je veći od neorganizovanog. Citologija urin shape. The diameter is an estimate, however, because a microscopic examination of urine sediment is two-dimensional. Casts are formed in the lumen of the tubules in the kidney anywhere along the length of the tubule. They develop from the secretion or precipitation of uromodulin, also known as Tamm-Horsfall protein. Th Red Cell Casts, urine RBC Casts None Kidney glomerular disease Granular casts, urine Gran Casts (#/40LPF) 0-10 per 40 LPF Normal finding and also seen in various types of kidney diseases Hyaline casts, urine Hyaline Casts (#/40LPF) 0-10 per 40LPF Normal, dehydration Specific gravity, urine SpG Degrees Fahrenhei
RBC (DRBC), and define the limits of dysmorphism in these two conditions. 3. To determine the type of cell excreted in the hematuria caused by renal biopsy. 4. To establish the routine predictive value of RBC in the urine of patients undergoing routine renal function testing. Methods Red cell counting To determine the total number of all RBC in. The analysis identifies the presence or absence of anomalous components such as cells, crystals and casts in urine. As techniques are not standardised and manual measurements can lead to inaccurate results, veterinarians struggle with the drawback of 'human error'. Technicians must be very precise and consistent when evaluating urine sediment A drop of stain is added to the drop of urine sediment and it's then covered with a coverslip. Scan area on low power (10X) looking for casts. Report the average number per low power field and identify them (e.g. finely granular, hyaline, etc.) Go to high dry (40X) and examine then report the average number per field of RBC's, WBC's. The microscopic examination of the centrifuged urine sediment includes the study of formed elements, such as WBC's, RBC's, casts and crystals. The macroscopic examination of urine includes physical appearance, such as color, character and clarity. See U.1 Manual Urinalysis Dipstick SOP for macroscopic testing and reporting procedures Canine Urine Sediment Evaluation. After the urine has been evaluated visually and via the dip stick, the sample is centrifuged, the fluid portion discarded, and the remaining nonfluid and cellular elements evaluated under the microscope