Serum or plasma substance concentration (qualitative) for renal function biomarker (albumin/protein ratio)
This test measures a specific protein ratio in your blood to help assess how well your kidneys are functioning.
["Understanding your kidney health through protein balance in blood."]
Key facts at a glance
- LOINC
- 37963-6
- Short code
- XR Ribs Ant-R Views
- Synonyms
- XR Ribs Ant-R Views
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- xr
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
This test evaluates the ratio of certain proteins in your blood, often used to detect early kidney damage or dysfunction. The specific proteins measured may include albumin and other proteins that can be filtered by the kidneys. The qualitative nature means the result is a general indication rather than a precise number.
Why It Matters in Kidney Health
Kidneys filter waste and excess substances from your blood. If they become damaged, proteins may leak into urine instead of staying in the bloodstream. This test helps identify if your kidneys are working properly by checking for abnormal protein levels.
When You Might Need This Test
Your doctor may recommend this test if you have symptoms like swelling, frequent urination, or if you have a history of kidney issues. It can also be part of routine check-ups for people at higher risk of kidney problems.
What to Expect Before the Test
No special preparation is needed. You will provide a blood sample, usually drawn from your arm. The test is quick and generally painless. If you are on certain medications or have a medical condition, let your healthcare provider know before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal protein ratios in blood can signal kidney problems, such as nephrotic syndrome or early-stage kidney disease. High levels of certain proteins may indicate kidney damage, while low levels might suggest protein loss due to kidney dysfunction. This test is a tool to monitor kidney function and guide treatment decisions.
Short name
None
Frequently asked questions
How is this test different from a routine blood test?
What does a positive or abnormal result mean?
Can I eat or drink anything before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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