This test measures Vitamin B12 levels in the blood and helps identify deficiency that may affect energy, nerve health, and red blood cell production.

Vitamin B12 is essential for healthy nerve function, DNA synthesis, red blood cell formation, and energy metabolism.

Symptoms may include fatigue, weakness, numbness or tingling in the hands and feet, memory issues, and difficulty concentrating.

Individuals with fatigue, anemia, neurological symptoms, digestive disorders, vegetarians, vegans, and older adults may benefit from Vitamin B12 screening.

Fasting is generally not required for a Vitamin B12 test unless advised by your healthcare provider.

Testing frequency depends on individual health conditions and risk factors, but periodic screening may be recommended for those at risk of deficiency.

Vitamin B12 deficiency is one possible cause of anemia. Additional tests may be required for a complete diagnosis.

Results are typically available within 24 hours, depending on laboratory processing times.