Are you currently taking a B complex or a multi with B vitamins?
I'd been taking a multi, b complex, and 1000 mcg methyl b12 daily. My llmd said no need for the multi since I'm also taking c, d, e, vitamins and eating a well balanced diet. I recently quit the b complex as well, but probably after I had the blood drawn.
Llmd put me on "homocysteine supreme" which has b2, B6, Folate, b12, zinc, trimethyl glycine, choline dihydrogen citrate, serine, and nac.
The day of the test, I didn't take any vitamins before the blood draw fwiw.