Vitamin B complex B1, B2, B3, B6, B11, B12
Vitamin B Combination Test
* Vitamin B1 (thiamine diphosphate) from EDTA blood
* Vitamin B2 from EDTA blood
* Niacin vitamin B3 (nicotinic acid/amide) from serum
* Vitamin B6 from EDTA blood
* Folic acid vitamin B11
* Vitamin B12 from serum