What's driving this
1434 flags "high", but MMA (127) and homocysteine (6.2) are normal — no functional excess, just daily B12 injections saturating serum. Benign given the TCN2 transport variant.
Full protocol →Across draws
Vitamin B12
| Draw | Value | Status |
|---|---|---|
| June 25, 2026 | 1434 pg/mL | HIGH |
| May 28, 2026 | 1451 pg/mL | HIGH |
| November 21, 2025 | 442 pg/mL | NORMAL |