Free Light Chain Assay (kappa & Lambda) Test - Serum
- Category
- Cancer
- Sample
- Blood sample taken from a vein in your arm
- Reports () Terms & Conditions Report time varies with time of sample collection.
- In 7 days
- Fasting
- No Fasting
- Age
- 5+ Years
What Is This Test?
Measures free light chains (kappa and lambda) in your blood. Light chains are parts of antibodies produced by plasma cells.
Why this test is performed?
Helps diagnose and monitor multiple myeloma, amyloidosis and related plasma cell disorders; an abnormal kappa/lambda ratio suggests a clonal disorder.
Who should take this test?
People being evaluated or treated for cancer, or as advised by an oncologist. Not a stand-alone screening test.
Test Preparation
No fasting needed.
What's included 2 parameters
Lambda Free Light Chain (1)
- Lambda Free Light Chain
Kappa Free Light Chain (1)
- Kappa Free Light Chain
Medical disclaimer · for information only, not medical advice
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.
Read our Editorial Policy and Medical Review Process.
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Frequently asked questions
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Blood sample taken from a vein in your arm.
Usually within 5–6 days after the sample reaches the lab. You will receive the report online.
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