This product is a home blood test kit that measures active vitamin B12 (holotranscobalamin), which is the form that can be used by your body’s cells. Unlike total B12 tests, this marker offers better insight into whether your tissues are actually getting enough B12.
Why choose this product
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Detects the biologically active portion of vitamin B12, improving early detection of deficiency
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Useful when total B12 levels seem normal but symptoms (like fatigue or neuropathy) persist
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Helps guide more targeted supplementation or further diagnostic testing
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Simple finger-prick collection at home, with results processed by immunology/biochemistry labs
Important information
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Active B12 is considered a more reliable indicator of B12 availability than total B12 because much of total B12 is bound to inactive carriers.
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A low result suggests that your tissues may not be receiving enough B12, even if total B12 levels appear normal
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This test is for informational purposes only and cannot, by itself, diagnose a deficiency or underlying condition
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Results should be reviewed by a qualified healthcare professional before making supplementation or treatment decisions
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All samples are processed in accredited laboratories using validated immunoassays
