Measures methylmalonic acid in a urine sample. Methylmalonic acid rises when vitamin B12 is deficient at the tissue level.
Confirms vitamin B12 deficiency when B12 levels are borderline, and screens for methylmalonic acidaemia in children. A urine test shows how much is being passed by the kidneys.
Fatigue, weakness, tingling or numbness, mouth ulcers, hair fall, vegetarians/vegans, older adults and people with poor diet.
No fasting needed. Give a first-morning, mid-stream urine sample in a sterile container.
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No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Urine sample — preferably first-morning, mid-stream, in a sterile container.
Usually within 3–4 days after the sample reaches the lab. You will receive the report online.
