Vitamins
Vitamin B12 (Active) Blood Test in London
The Vitamin B12 (Active) test measures the biologically active form of vitamin B12 (holotranscobalamin) in your blood. Unlike total B12 tests, this one reflects the amount of B12 available for immediate use by your body. It is a more sensitive and early indicator of B12 deficiency.
- TAT: 2-3 Working Days
- Sample Type: Blood
- Price includes phlebotomy
What's included
The Vitamin B12 (Active) test measures the biologically active form of vitamin B12 (holotranscobalamin) in your blood. Unlike total B12 tests, this one reflects the amount of B12 available for immediate use by your body. It is a more sensitive and early indicator of B12 deficiency.
- Early Detection of Deficiency: Active B12 is a more accurate marker for detecting deficiency in its early stages.
- Neurological Health: supports nerve function and helps prevent symptoms like tingling, numbness, and memory problems.
- Energy & Mood Support: essential for reducing fatigue, supporting metabolism, and improving mental clarity.
- Better Insight Than Total B12: offers a clearer picture of functional B12 availability in the body.
Suitable for People with symptoms suggestive of deficiency, or those wanting to check their nutritional status.
Frequently asked questions
How is the Vitamin B12 (Active) test sample collected?
A small blood sample is drawn from a vein in your arm by a qualified phlebotomist.
Do I need to prepare for this test?
No special preparation is usually required, but follow your clinician's instructions.
How long will it take to get results?
Turnaround time is approximately 2-3 working days.
What if my Active B12 levels are low?
Your healthcare provider may recommend further tests, dietary changes, supplements, or B12 injections.
