A high or low folate blood test can reflect recent supplement use, diet, absorption, medication effects, pregnancy needs, alcohol use, or related vitamin B12 problems. Learn how to interpret serum and RBC folate results, what to check next, and when follow-up testing matters.
A folate blood test measures vitamin B9 in your blood and is commonly used to evaluate possible folate deficiency, macrocytic anemia, pregnancy-related nutrient needs, and malabsorption concerns.
A homocysteine blood test measures an amino acid linked to vitamin B12, folate, vitamin B6 metabolism, and selected cardiovascular or genetic evaluations. Learn when it is ordered, how to prepare, and how to interpret results.
