Serum or plasma concentration of a specific protein or peptide marker measured by immunoassay (e.g., a biomarker related to protein metabolism or inflammation)
This test measures the amount of a particular protein or substance in your blood, often used to assess health conditions like kidney function, inflammation, or metabolic processes.
["Your blood test helps doctors understand how certain proteins or substances are working in your body."]
Key facts at a glance
- LOINC
- 18559-5
- Short code
- J Pnt ST Amp+60ms L-I
- Synonyms
- J Pnt ST Amp+60ms L-I
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ekg
- 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 This Test Is Done
Doctors may order this test to monitor conditions such as kidney disease, liver function, inflammation, or to check for certain genetic or metabolic disorders. It can also help track treatment responses or screen for hidden health issues.
What to Expect Before the Test
No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the test if it involves a fasting sample. Bring your doctor’s instructions if you have any dietary restrictions.
During the Test
A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but it’s usually over quickly. The blood sample is then sent to a lab for analysis.
What the Results Mean
Results can vary widely depending on the specific protein or marker tested. Your doctor will compare your results to standard ranges and discuss what they mean for your health, including any potential risks or next steps.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal results may indicate underlying health issues, such as protein loss (e.g., in kidney disease), elevated inflammation markers, or metabolic imbalances. Your doctor will interpret results in the context of your medical history and symptoms to guide further care.
Frequently asked questions
How long does it take to get results?
Can I eat or drink before this test?
What if my results are outside the normal range?
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