Vitamin Test

Vitamin B12

A vitamin B12 test measures the level of vitamin B12 in your blood. B12 helps maintain normal metabolism, make healthy blood cells, and keep your nervous system working properly. Deficiency can cause anemia and nerve disorders.

Also known as: Cobalamin test, Vitamin B test, Cyanocobalamin

Normal Range

ParameterReference Range
Normal200–900 pg/mL
Low (Deficiency)< 200 pg/mL
High> 900 pg/mL

Who Should Take This Test?

Used if you have symptoms suggesting B12 deficiency, or if you have conditions that increase your risk like Celiac disease, Crohn's disease, or if you follow a vegetarian/vegan diet.

How It Works

A blood sample is taken from a vein in your arm and analyzed for B12 levels. Sometimes a urine test may also be used.

Preparation

You may need to fast (not eat or drink) for several hours before the test.

How Often?

When deficiency is suspected or for those at high risk

Symptoms to Watch

Fatigue
Arrhythmia (irregular heartbeat)
Weight loss without trying
Tingly or numb hands and feet
Cracks at corners of mouth
Swollen tongue

Risk Factors

Celiac or Crohn's disease
Alcohol use disorder
Malabsorption syndrome
Vegetarian or vegan diet (no animal products)
Gastric bypass surgery
Taking certain medicines affecting B vitamin levels

Related Conditions

AnemiaNerve DisordersNeuropathyPernicious Anemia

Cost Comparison in India

Prices range from ₹650 to ₹1250

Thyrocare
Thyrocare
₹650Book
Dr Lal PathLabs
Dr Lal PathLabs
₹800Book
Metropolis Healthcare
Metropolis Healthcare
₹1100Book
Apollo Diagnostics
Apollo Diagnostics
₹1250Book

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Medical Disclaimer: The information provided here is for educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider.