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Proteinuria (Quantitative Urine Protein)

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of protein found in your urine, which can help detect kidney problems or other conditions affecting protein loss.

Quick summary

["Early detection of protein in urine may signal kidney issues or other health concerns."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
20454-5
Short code
Prot Ur Ql Strip
Synonyms
Prot Ur Ql Strip
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
test-strip
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your doctor may order this test if you have symptoms like swelling, frequent urination, or if you’re at higher risk for kidney disease. It can also be part of routine check-ups for certain conditions.

What to Expect Before the Test

No special preparation is needed. You’ll likely provide a small urine sample in a clean container. Avoid excessive exercise or certain medications that might affect results for 24 hours before testing.

How the Test Works

The test measures the total protein content in your urine using a sensitive method to detect even small amounts. Results are compared to a baseline or clinical thresholds to identify abnormalities.

Possible Results and Next Steps

Higher-than-normal protein levels may indicate kidney disease, diabetes, or other conditions. Follow-up tests or doctor visits may be needed to determine the cause and next steps.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine Protein Test

Frequently asked questions

What causes protein in urine normally?
Small amounts of protein can appear in urine due to hydration, exercise, or certain medications. However, persistent proteinuria warrants further evaluation.
How is proteinuria treated?
Treatment depends on the underlying cause. Your doctor may recommend lifestyle changes, medications, or monitoring to address kidney or related health issues.
Can diet affect urine protein levels?
Dietary changes like reducing salt or protein intake may help in some cases, but consult your doctor before making changes, as results vary by individual.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy