RBC Folate measures the amount of folate stored inside red blood cells, reflecting your folate status over the past few months. It’s considered a more accurate long-term marker than serum folate, which can fluctuate with recent diet.
8-10 hours before the test (water is allowed).
Tell our technician about any folic acid supplements or anti-seizure medications you take.
folate supplements for a few days before testing, if possible, unless advised otherwise.
alcohol before the test.