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Serum or plasma substance concentration measurement for a specific protein or biomarker (likely related to renal function or metabolic screening)

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

This test measures the amount of a particular substance in your blood, often used to check kidney function, metabolic health, or other conditions.

Quick summary

["Understanding your blood substance levels helps doctors diagnose and monitor health conditions."]

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

Key facts at a glance

LOINC
97559-9
Short code
nAChR IgG+IgM Ser IA-sCnc
Synonyms
nAChR IgG+IgM Ser IA-sCnc
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
CPT
82784
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 you have symptoms like fatigue, swelling, frequent urination, or if you’re at risk for kidney disease, diabetes, or other metabolic disorders. It could also be part of routine check-ups or monitoring for certain conditions.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for a few hours if the test involves a specific analyte related to blood sugar or fats. Drink plenty of water the day before to ensure proper blood flow. Avoid smoking or excessive caffeine before the test.

What Happens During the Test

A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause pain. The blood sample is then sent to a lab for analysis.

What the Results Mean

Results will show the concentration of the measured substance in your blood. While reference ranges vary by lab and analyte, higher or lower levels may indicate potential health issues that need further evaluation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

None

Frequently asked questions

This test can help identify conditions such as kidney disease, liver problems, metabolic disorders, or other systemic health issues by detecting abnormal levels of specific substances in your blood.
Abnormal results may prompt additional tests or treatments to address underlying causes, such as adjusting medications or lifestyle changes.
How often should I get this test?
The frequency depends on your health status, symptoms, and medical history. Your doctor will determine how often you need this test based on your individual needs.
What can affect my test results?
Factors like diet, medications, hydration status, and recent illness can influence blood test results. Always inform your healthcare provider about any medications or supplements you’re taking.
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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