Overview
- UK outlets Mirror and Bristol Live on Nov. 22 highlighted Apollo Delhi surgeon Dr Anshuman Kaushal’s message that patients can have deficiency symptoms despite normal serum B12.
- Standard assays typically report total B12 and may miss shortages of the biologically active form, as much circulating B12 is bound to an inactive carrier protein.
- Dr Kaushal recommends ordering methylmalonic acid and homocysteine to detect functional deficiency that routine serum measurements can overlook.
- He notes that patients with confirmed cellular deficiency may require vitamin B12 injections to restore adequate availability.
- Coverage reiterates symptoms such as fatigue, brain fog and tingling, with experts and the NHS cautioning that missed deficiency can lead to lasting nerve problems.