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Product updates, guides, and engineering notes from the team.
Which B12 test actually tells you something
Serum B12 is the test everyone orders and the one that misses the most cases. Here is why methylmalonic acid is the better follow-up — and when homocysteine helps.
Oct 28, 2026B12 Insight
The homocysteine trials nobody quotes
B vitamins lower homocysteine. They have not reliably prevented heart attacks. Both facts belong in the same paragraph — here is what the big trials actually found.
Oct 20, 2026B12 Insight