Vitamin B12 (Cobalamin)

Test investigation

Vitamin B12 (Cobalamin)

Laboratory offering test

NNUH, QEH, JPUH

Units

ng/L

Comments precautions

Total B12 levels < 300 ng/L are reflex tested for holotranscobalamin (HoloTC). HoloTC has greater diagnostic accuracy for B12 deficiency. Levels should always be interpreted in conjunction with haematological and clinical findings. Neurological features of Vitamin B12 deficiency can occur without anaemia.

Sample type

Serum

Turnaround times (TAT) Urgent/Routine/GP or OPD

Within 4 hours/8 hours

Reference intervals

187 – 883 ng/L

If ukas accredited

Y NNUH