HoloTC

in Serum
Also known as:
Holotranscobalamin - Active vitamin B12
S-holoTC
Active-B12
Holotranscobalamin
Enter value to interpret your result

Optimal HoloTC reference ranges for longevity

  • According to OptimalDX, HoloTC should be between 54 and 188 pmol/L

About the site author

My personal mission is to extend human lifespan by collectively adding 1 million years to people's lives.

Zsolt Szabo
Zsolt Szabo
Software Engineer, Biohacker, and Consultant for Longevity Clinics.

Please send me studies and feedback.

Any feedback is welcome at .
I am particularly interested in research on biomarkers linked to all-cause mortality or optimal reference ranges.