What this test measures
A Complete Urine Analysis combines three layers of evaluation on a single mid-stream sample. The physical exam reports colour, appearance and specific gravity. The chemical (dipstick) exam reports pH, protein, glucose, ketones, blood, bilirubin, urobilinogen, nitrite and leucocyte esterase. The microscopic exam looks at the sediment under high-power for red blood cells, white blood cells, epithelial cells, casts, crystals, bacteria, yeast, and parasites.
Together these results paint a quick picture of urinary tract health, kidney filtration, hydration, diabetic control, hepatic function and (indirectly) infection — making it one of the most cost-effective screens in clinical medicine.
Why it matters
For an Indian patient population where urinary tract infections in women, diabetes-related kidney disease, and kidney stones are common, a complete urine analysis is a workhorse screening test. It is used in routine health checks, in pregnancy at every antenatal visit, in diabetes follow-up to look for early proteinuria, in fever workups to look for UTI, and in any patient with flank pain, burning urination or visible blood in the urine.
Many conditions show up in urine before they show up in blood — early diabetic nephropathy, asymptomatic UTI in pregnancy, undiagnosed diabetes — making this test a high-yield first step.
How to prepare
Collect a clean mid-stream urine sample, ideally the first urine of the morning (most concentrated). Wash the genital area before collection. Discard the first part of the stream into the toilet, then catch the middle portion in the sterile container. Avoid testing during menstruation (false haematuria) or right after a UTI antibiotic course (suppressed markers). Mention any vitamin C supplements — they interfere with dipstick chemistry. Mention if you are on a low-carb diet (will show ketones).
Markers & reference ranges
Reference ranges below are typical adult values. Your lab's reported range may differ slightly based on the assay platform and patient demographics — always read your report against the range printed on it.
| Marker | Normal range | If low | If high |
|---|---|---|---|
| Specific Gravity (—)[1] | 1.005 – 1.030 | Dilute urine — over-hydration, diabetes insipidus, CKD with concentrating defect, diuretic use. | Concentrated urine — dehydration, fluid restriction, diabetes mellitus (with glucose), proteinuria with nephrotic syndrome. |
| Protein (mg/dL) | Negative or trace | Normal. | 1+ or higher = proteinuria. Causes: diabetic nephropathy, glomerulonephritis, UTI, dehydration, fever, vigorous exercise. Persistent → UPCR + KFT. |
| Glucose (mg/dL) | Negative | Normal. | Glycosuria. Uncontrolled diabetes (blood glucose > 180), pregnancy (lower renal threshold), rarely renal glycosuria. Pair with HbA1c and fasting glucose. |
| Nitrite + Leucocyte Esterase (—)[1] | Negative | Normal. | Both positive — strong evidence of bacterial UTI (E. coli most common). LE positive with nitrite negative — sterile pyuria (TB, partially treated UTI, fastidious organisms). |
| Microscopy — RBCs (/HPF) | 0 – 2 / HPF | Normal. | > 5 / HPF = haematuria. Causes: UTI, kidney stones, glomerular disease, anticoagulants, bladder / kidney cancer, exercise, menstruation. Persistent → imaging / cystoscopy. |
| Microscopy — WBCs (/HPF) | 0 – 5 / HPF | Normal. | > 5 / HPF = pyuria. Usually UTI; if culture negative, consider TB, fastidious organisms, interstitial cystitis. |
| Microscopy — Casts (/LPF) | None / occasional hyaline | Normal. | Red cell casts → glomerulonephritis. White cell casts → pyelonephritis. Granular / waxy casts → tubular injury, advanced CKD. |
Common urine analysis patterns
| Pattern | Likely cause |
|---|---|
| Nitrite + LE + WBCs + bacteria | Bacterial UTI (E. coli most common) |
| Glucose +, ketones +/- | Uncontrolled diabetes — pair with HbA1c |
| Persistent 1–2+ protein | Early diabetic / hypertensive nephropathy |
| RBCs only, sterile | Kidney stone, glomerular disease, trauma, malignancy |
| Bilirubin + / urobilinogen ↑ | Hepatobiliary disease — pair with LFT |
| Sterile pyuria | TB urinary tract, partially treated UTI, interstitial cystitis |
| Crystals + flank pain | Renal stones — consider ultrasound / CT KUB |
Frequently asked questions
Is "Complete Urine Analysis" different from "Urine R/E"?
In Indian labs the two are usually the same: physical + chemical + microscopic exam of urine. Some labs call it Complete Urine Examination (CUE), Urine R/M (Routine and Microscopy), or Urinalysis. The components are identical.
How should I collect the sample?
Use the mid-stream clean-catch technique. Clean the genital area, pass the first part of the urine into the toilet, then catch the middle of the stream in the sterile container. The first urine of the morning is best — it is most concentrated.
Can I do this test during my period?
No. Menstrual blood contaminates the sample and produces false-positive haematuria. Reschedule for 3 days after the period ends.
My report shows "epithelial cells +++" — what does it mean?
High epithelial cells usually mean the sample was contaminated by skin / genital cells during collection. Repeat with a properly cleaned mid-stream sample.
I have UTI symptoms but my urine is normal — what next?
Do a urine culture and sensitivity. Some organisms (TB, fastidious bacteria) or partially treated infections are missed on dipstick / microscopy.
Does the urine analysis tell me if I have kidney stones?
Indirectly. Microscopic blood with crystals and flank pain are clues, but ultrasound or CT KUB is the definitive test.
How long does the report take?
Most NABL labs deliver urine analysis reports within 4–6 hours of sample receipt.
Related Microbiology / Urine / Stool tests
Tests commonly ordered alongside COMPLETE URINE ANALYSIS, or that help interpret an unexpected result.
Sources & references
- NIH MedlinePlus — Urinalysis · accessed 2026-05-30T00:00:00.000Z
- NCBI StatPearls — Urinalysis · accessed 2026-05-30T00:00:00.000Z
- American Family Physician — Urinalysis: A Comprehensive Review · accessed 2026-05-30T00:00:00.000Z
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