DNATCA DNA Health & Traits Tests Fitness and Nutrition DNA Tests What genes are tested in the DNA Nutrition Test? Vitamin A - BCO1 Vitamin B6 - NBPF3 Folate (Vitamin B9) - MTHFD1 and MTHFR Vitamin B12 - FUT2 Vitamin C - SLC23A1 Vitamin D - CYP2R1 and GC Vitamin E - APOA5 Iron - TF and TMPRSS6 Omega-3 - NOS3