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Caffeine
Measures caffeine metabolites in serum or plasma to assess recent caffeine consumption.
Why This Biomarker Matters
Caffeine testing helps evaluate intake when restricting for medical reasons or investigating symptoms potentially related to caffeine sensitivity or toxicity.
Overview
This urine test measures caffeine metabolites to detect caffeine consumption. It may be used in clinical settings to assess caffeine intake, monitor compliance with caffeine restriction (as recommended for certain heart conditions or during pregnancy), or evaluate unexpected symptoms. Caffeine levels in urine reflect recent consumption from coffee, tea, energy drinks, and medications. This test provides objective evidence of caffeine exposure when patient history is unclear.
Technical Information (LOINC Codes)
Standardized laboratory codes for this biomarker
3422-3Primary3424-94150-93423-125361-760290-429211-040416-043829-1Available Lab Tests
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