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Serum/plasma concentration of a specific protein or peptide marker (likely related to immune function or inflammation, based on context)

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

This test measures the amount of a particular protein or substance in your blood, which may help assess immune function, inflammation, or other health conditions.

Quick summary

["Understanding your protein levels can help doctors diagnose or monitor certain health issues."]

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

Key facts at a glance

LOINC
77490-1
Short code
Deprecated Hind+Mid ft-Bl XR Ski Jump
Synonyms
Deprecated Hind+Mid ft-Bl XR Ski Jump
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 This Test Might Be Ordered

Your healthcare provider may recommend this test if they suspect conditions like autoimmune disorders, infections, kidney disease, or other metabolic or inflammatory conditions. It could also be part of routine monitoring for chronic illnesses or after certain treatments.

What to Expect Before the Test

No special preparation is typically required, but you may be asked to fast for a few hours if the test involves a specific type of specimen (e.g., fasting blood glucose). Always follow your provider’s instructions. Avoid smoking or consuming alcohol for a specified period before testing if advised.

During the Test Process

A healthcare professional will draw blood from a vein in your arm. You may feel a brief pinch or slight discomfort, but it usually lasts only a few seconds. The process takes about 5 minutes, and you can usually return to your normal activities immediately afterward.

What the Results Mean

Results will be compared to standard ranges for your age, sex, and overall health. High or low levels may indicate potential health concerns, but they don’t diagnose conditions alone. Your doctor will discuss the results with you and may recommend further testing or adjustments to your treatment plan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated levels may signal inflammation, immune system activation, or certain diseases like infections, cancers, or autoimmune disorders. Low levels could indicate deficiencies, liver or kidney issues, or other metabolic problems. Always interpret results in the context of your overall health and symptoms.

Frequently asked questions

How long does it take to get my test results?
Results are typically available within 1–3 business days, depending on your lab’s processing time and whether additional testing is needed. Your healthcare provider will contact you once they have the results.
Can I eat or drink before this test?
No specific dietary restrictions apply unless your provider instructs otherwise. If fasting is required (e.g., for glucose tests), follow their guidance carefully. Otherwise, you can eat and drink normally.
What should I do if I have symptoms before the test?
If you experience new or worsening symptoms (e.g., fever, severe pain, or unusual fatigue), inform your healthcare provider before the test. They may adjust your test plan or schedule it differently based on your condition.
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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