Urinalysis
Examines urine content to help detect urinary tract infections, kidney disease, and diabetes.
Content last reviewed 2026-09-12 · Educational information — not medical advice
It is commonly considered when evaluating Systemic lupus erythematosus, Type 2 Diabetes, Hypertension; people with Seizure, Dysphagia, Fatigue may have it ordered as part of their work-up.
What is the Urinalysis?
The Urinalysis is a laboratory blood test that measures physical, chemical, and microscopic examination of urine — checking concentration, protein, blood, glucose, infection signs, and cellular debris.
Background: A urinalysis is a test of your urine . It is often done to check for a urinary tract infection , kidney problems , or diabetes . You may also have one during a checkup, if you are admitted to the hospital, before you have surgery, or if you are pregnant. It can also monitor some medical conditions and treatments. A urinalysis involves checking the urine for: Its color Its appearance (whether it is clear or cloudy) Any odor The pH level (acidity) Whether there are substances that are not normally in urine, such as blood, too much protein, glucose, ketones, and bilirubin Whether there are cells, crystals, and casts (tube-shaped proteins) Whether it contains bacteria or other germs
How the Urinalysis works
Physical inspection (color, clarity), chemical dipstick (protein, blood, glucose, leukocytes, nitrites, pH, specific gravity), and microscopic examination of centrifuged sediment; cultures grow out bacteria when infection is suspected.
Why healthcare providers order it
Burning/frequent urination, kidney-stone suspicion, diabetes screening, hypertension/kidney-disease monitoring, pre-employment or routine physicals, and pregnancy check-ups.
Interpreting your results
Understanding urinalysis results
- Leukocyte esterase + nitrite positive: classic urinary-tract-infection signature; culture confirms species and antibiotic sensitivity.
- Proteinuria: transient causes (exercise, fever, standing) versus persistent protein loss — the latter demands kidney follow-up.
- Hematuria: menstruation contamination, stones, infection — but persistent unexplained blood requires urologic evaluation.
- Glucose in urine usually means blood sugar exceeded the renal threshold.
What your urinalysis result means
Each dipstick pad answers a different question; abnormal findings usually trigger confirmatory microscopy or culture.
Reference intervals vary by laboratory, instrument, age, sex, and — for hormones — collection time. Always compare your value against the range printed on your own report, and review results with a qualified healthcare professional who knows your history. This guide is educational and does not diagnose.
Understanding your lab report
- Find the reference interval printed beside your value on the report — that pairing defines 'normal' for this lab run.
- Note the units. mmol/L vs mg/dL, ng/mL vs µg/L — numbers mean nothing across unit systems.
- Look at flags (H/L) but read the degree: barely-outside values behave differently than multiples of the limit.
- Trends outrank snapshots. A series of results tells your provider far more than any single draw.
Conditions that may involve Urinalysis
Symptoms that may lead to this test
Frequently asked questions
What does the Urinalysis measure?
It measures physical, chemical, and microscopic examination of urine — checking concentration, protein, blood, glucose, infection signs, and cellular debris.
Do I need to fast before the Urinalysis?
No fasting is required; a first-morning or clean-catch sample is often preferred.
How soon do Urinalysis results come back?
Most routine assays return within 1–3 business days; specialty methods can extend that to a week or more.
Can an abnormal Urinalysis result mean something serious?
Abnormal results range from benign to urgent; degree, direction, and trend — reviewed by a clinician who knows your history — determine what happens next.
Sources & data provenance
- MedlinePlus — 'Urinalysis' (https://medlineplus.gov/urinalysis.html)
- Family-specific guidance compiled from standard clinical laboratory medicine references