Urinalysis Equipment: Urinalysis Analyzers and Sediment Analyzers
Clinical Laboratory · Medical Equipment · Colombia 2026
Urinalysis Equipment: Urinalysis Analyzers, Dipsticks, and Urine Sediment
Complete urinalysis combines physicochemical analysis with dipsticks and microscopic sediment analysis — detecting urinary tract infections, diabetes, kidney and urological diseases. Equipment and methodology guide for laboratories in Colombia 2026
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GSMED Imaging Technical Team — Laboratory Equipment Colombia
Based on Sysmex UX-2000, Mindray BU-series, iQ200 SPRINT (Beckman Coulter), CLSI GP16-A3 (Urinalysis), and Colombia Ministry of Health Resolution 3100/2019 technical catalogs.
Urinalysis is one of the most requested laboratory tests in Colombia — its low cost and high diagnostic yield make it the first study for investigating urinary tract infections, kidney diseases, diabetes, and urological conditions. Modern equipment automates physicochemical analysis with dipsticks and the counting of formed elements in the sediment in an integrated system.
1. The Three Phases of Complete Urinalysis
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1. Physical Analysis
Evaluation of color (yellow, amber, red, cloudy), appearance (clear vs. cloudy), and urine specific gravity (using a refractometer or dipstick: 1.005–1.030). Cloudiness may indicate pyuria (infection), crystalluria, or chyluria. Very concentrated urine (specific gravity >1.025) suggests dehydration; very dilute urine (<1.005) may indicate diabetes insipidus.
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2. Chemical Analysis (Dipsticks)
Multiparameter dipsticks simultaneously analyze 10–12 parameters in seconds: pH, protein, glucose, ketones, bilirubin, urobilinogen, blood/hemoglobin, leukocytes (leukocyte esterase), nitrites (gram-negative bacteria), creatinine, and specific gravity. Urinalysis analyzers read the dipsticks using reflectometry — more reproducible than subjective visual reading.
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3. Microscopic Sediment
Analysis of centrifuged urine to identify and quantify: leukocytes, erythrocytes, casts (hyaline, granular, erythrocyte, leukocyte), epithelial cells, bacteria, crystals, yeast, and sperm. Automated sediment analyzers (Sysmex UX-2000, iQ200) capture images of the particles and classify them using AI.
2. Available Equipment — From Manual Dipsticks to Integrated Systems
| Equipment | Throughput | Automated Phases | Model | Ideal for |
|---|---|---|---|---|
| Basic Dipstick Reader | 120–200 dipsticks/hour | Chemistry only (dipsticks) | Mindray BU-200 · DIRUI H-800 | Primary care laboratories · Clinics · EPS |
| Compact Integrated Urinalysis Analyzer | 60–100 samples/hour | Chemistry + basic sediment | Mindray BU-5100 · Sysmex UF-500i | Medium-complexity laboratories |
| Imaging Sediment System | 80–120 samples/hour | Chemistry + imaging sediment | Sysmex UX-2000 · iQ200 SPRINT | High-complexity hospital laboratories |
| Integrated Chemistry + Sediment Line | 120–200 samples/hour | Physical + chemical + sediment + review | Sysmex UC-3500 + UX-2000 | Central laboratories · University hospitals |
3. Clinical Interpretation of the Most Common Findings
| Urinalysis Finding | Most Likely Clinical Significance | Action |
|---|---|---|
| Positive nitrites + leukocyte esterase | Bacterial urinary tract infection (UTI) | Urine culture + antibiogram before starting antibiotics |
| Urine glucose (glucosuria) | Uncontrolled diabetes mellitus or kidney diabetes | Fasting blood glucose + HbA1c |
| Protein ++/+++ (proteinuria) | Nephropathy (diabetic, hypertensive, glomerulonephritis) | 24-hour urine protein or protein/creatinine ratio |
| Microscopic hematuria (>5 erythrocytes/field) | Renal lithiasis, urinary tract infection, urothelial tumor, glomerulonephritis | Renal ultrasound + ureteroscopy if hematuria without infection |
| Erythrocyte casts | Active glomerulonephritis | Refer to nephrology — kidney biopsy may be necessary |
| Positive ketones | Diabetic ketoacidosis or prolonged fasting | Urgent blood glucose — if >250 mg/dL with ketones: emergency department |
| Calcium oxalate crystals | Calcium oxalate urolithiasis | Renal ultrasound + hydration + dietary oxalate control |
Why Automated Sediment Analysis Improves Diagnosis
Manual microscopic sediment analysis has significant inter-observer variability — an experienced bacteriologist and a recent graduate may report different results from the same sample. Automated imaging sediment systems (Sysmex UX-2000, iQ200 SPRINT) capture digital images of each particle, classify them using artificial intelligence, and allow the bacteriologist to review only the particles flagged as abnormal or difficult to classify on the screen. This reduces processing time, improves reproducibility, and allows relevant findings to be documented photographically in the medical record.
Can a dipstick replace microscopic sediment analysis?
Not completely. The dipstick chemically and indirectly detects the presence of leukocytes (via leukocyte esterase) and erythrocytes (via hemoglobin peroxidase). Microscopic sediment analysis visualizes them directly and can also identify casts, crystals, atypical epithelial cells, and bacteria — information the dipstick cannot provide. CLSI GP16-A3 guidelines recommend performing microscopic sediment analysis on any urine sample with positive dipstick results (protein, blood, leukocytes, nitrites) and as a quality control measure to validate automated sediment results.
Urinalysis Analyzers Available in Colombia — GSMED
Dipstick readers, imaging sediment systems, and integrated Mindray and Sysmex lines — with local technical support and available reagents.
Clinical Laboratory Equipment for Your Institution — GSMED Colombia
Hematology · Biochemistry · Cell Culture · Rapid POCT Diagnostics · Urinalysis — with local technical support and available financing.
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Sources
- CLSI. GP16-A3 — Urinalysis; Approved Guideline. clsi.org. CLSI GP16-A3
- Sysmex. UX-2000 Urine Analyzer System. sysmex.com. 2026. Sysmex
- Mindray Medical. BU-5100 Urine Analyzer. mindray.com. 2026. Mindray
- Colombia Ministry of Health. Resolution 3100/2019 — Enabling Standards. minsalud.gov.co. Colombia
