Serum or plasma concentration of total protein by nephelometry (bromocresol purple method)
This test measures the amount of protein in your blood, which helps your body function properly. Proteins are essential for healing, transporting nutrients, and maintaining fluid balance.
["Your blood protein levels can indicate overall health and help diagnose conditions like dehydration, liver disease, or kidney problems."]
Key facts at a glance
- LOINC
- 77480-2
- Short code
- Deprecated Hind+Mid ft-R XR
- Synonyms
- Deprecated Hind+Mid ft-R XR
- 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
Why Is This Test Done?
Doctors may order this test to check for signs of illness, monitor chronic conditions, or evaluate symptoms like swelling, fatigue, or changes in urine output. It can also help assess how well your kidneys or liver are working.
What to Expect Before the Test
No special preparation is needed, but you may be asked to fast for 8–12 hours before the test if it’s part of a larger blood panel. Wear comfortable clothing and bring any medications you’re currently taking.
What Happens During the Test?
A healthcare provider will draw blood from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause discomfort. The blood is then sent to a lab for analysis.
What Are Possible Results?
Results are expressed in grams per deciliter (g/dL). Low levels may suggest malnutrition, kidney disease, or severe dehydration, while very high levels could indicate conditions like multiple myeloma or severe liver disease.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal protein levels can signal underlying health issues. Low protein may indicate poor nutrient absorption, organ dysfunction, or excessive fluid loss. High protein levels could point to conditions like inflammation, infections, or certain cancers. Always discuss results with your doctor for personalized interpretation.
Short name
Total protein
Frequently asked questions
What causes low total protein levels?
What causes high total protein levels?
How often should I get 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