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MRA Panel, Blood — Concentration by Radioimmunoassay

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

A blood test that measures MRA-related markers by radioimmunoassay and reports the results as concentrations. The exact markers included should be confirmed with the ordering clinician.

Quick summary

["This test measures selected MRA-related substances in blood to help assess an abnormality or guide treatment."]

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

Key facts at a glance

LOINC
69162-6
Short code
MRA PA-Bl W contr IA
Synonyms
MRA PA-Bl W contr IA
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mr-angio
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 is this test?

This is a blood panel that measures selected MRA-related substances using radioimmunoassay (RIA), a laboratory method based on antibody binding. Because MRA may refer to different panels, the laboratory or ordering clinician can confirm the specific markers included.

Why might I need this test?

The test may be ordered to evaluate a suspected condition, monitor an existing condition, or assess the effect of treatment. Your healthcare professional can explain which clinical question the MRA panel is intended to answer.

How is the test performed?

A blood sample is collected, usually by venipuncture, and sent to the laboratory. RIA uses antibodies and a radioactive signal to measure the concentration of the selected substances; the laboratory handles all radioactive materials under required safety procedures.

How do I prepare for the test?

Special preparation is not usually required for a routine blood draw, but fasting or stopping a medication may be necessary for certain MRA markers. Follow the instructions provided by the ordering clinician and tell the laboratory about any supplements or medicines you take.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

MRA blood panel

Frequently asked questions

Does this test require fasting?
Not always, but some components of an MRA panel may be affected by eating. Ask the ordering clinician whether fasting is required for your specific test.
What does an abnormal MRA result mean?
It may reflect an underlying condition, a change in medication levels, or another factor affecting the measured substance. Your clinician will interpret the result in the context of the exact markers tested.
Is the radioimmunoassay method safe?
Yes. RIA is performed in a regulated laboratory using required radiation-safety procedures, and the blood draw itself is the same type used for many routine tests.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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