Can a Bence Jones urine test detect MGUS?
Yes, a Bence Jones urine test can help detect MGUS. This test looks for light-chain proteins (called Bence-Jones proteins) in your urine, which are part of the M protein that characterizes MGUS.
When your body produces excess light-chain proteins that aren't attached to heavy Show Full Answer
Can a Bence Jones urine test detect MGUS?
Yes, a Bence Jones urine test can help detect MGUS. This test looks for light-chain proteins (called Bence-Jones proteins) in your urine, which are part of the M protein that characterizes MGUS.
When your body produces excess light-chain proteins that aren't attached to heavy proteins, they get eliminated through urine. The test typically involves collecting all your urine over a 24-hour period.
However, it's important to know that MGUS is usually found through routine blood tests rather than urine tests alone. A complete evaluation for MGUS typically includes:
- Blood tests to check M protein levels
- Urine tests (including the Bence Jones test)
- Sometimes imaging tests or bone marrow biopsy if needed
Since MGUS rarely causes symptoms, it's often discovered incidentally during testing for other health conditions. Your healthcare provider can give you specific instructions if you need to take this test.
December 23, 2025
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