Description
Vitamin B12 is vital for energy, nerve function and healthy red blood cells, and this test identifies a deficiency that can quietly cause fatigue, tingling and anaemia.
About the Vitamin B12 Test
This test measures the level of vitamin B12 in your blood. B12 is essential for making red blood cells and maintaining healthy nerves, and deficiency — more common in older adults, vegetarians and those with absorption problems — can cause tiredness, tingling, memory changes and a specific type of anaemia. Because symptoms develop gradually, testing is a valuable way to identify a readily treatable cause.
Preparation and turnaround
A quick venous blood sample is taken with no fasting required. Results are usually available within one to two working days. If your level is low, your doctor can advise on dietary changes, supplements or injections, and on any further investigation of the cause.
Frequently asked questions
Who is at risk of B12 deficiency?
Older adults, vegetarians and vegans, and people with absorption conditions are at higher risk of low vitamin B12.
What symptoms can low B12 cause?
Fatigue, tingling in the hands and feet, memory changes and anaemia can all result from B12 deficiency.
Is fasting needed?
No fasting is required for the vitamin B12 test.
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