**Note: All laboratory testing requires an authorizing physician. DHA Laboratory offers a Patient Direct Program that partners you with an authorizing physician. If you have any additional questions regarding the availability of testing, please contact our laboratory by telephone or email.**
Methylmalonic Acid, Serum is used in the evaluation of individuals who have symptoms relating to vitamin B12 deficiency. This test can also be ordered with a homocysteine test if a patient has vitamin B12 test results that report out as low.