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DigestiveDetected by blood test

Subclinical vitamin B12 deficiency

Vitamin B12 in the low-normal range together with raised homocysteine and normal folate, a sign that the body's cells are already short of B12 even though the level itself does not look low. It is common in people over 60, vegetarians and vegans, and people taking metformin or stomach-acid blockers. Blood testing picks it up before it causes anemia or nerve damage.

Screened for in

B-vitamins

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Related biomarkers we test

Vitamin B12

Vitamin B12 is a water-soluble vitamin essential for the production of red blood cells, the synthesis of DNA, and the healthy functioning of the nervous system. It also supports brain function and energy metabolism. The body cannot make B12 on its own and relies on dietary sources such as meat, fish, eggs, and dairy. Excess B12 is stored in the liver, so deficiency can take time to develop but may lead to serious health issues if not addressed.

Folic acid (Vitamin B9)

Folic acid, or folate in its natural form, is a water-soluble B vitamin that plays a key role in cell division, DNA synthesis, and red blood cell formation. It is especially important during periods of rapid growth, such as pregnancy and adolescence. Folate is found in leafy greens, legumes, citrus fruits, and fortified foods. The body cannot produce folate and depends on regular dietary intake.

Related conditions in Digestive