Vitamin Test
Vitamin B12 Test
A blood test used to measure vitamin B12 levels and help evaluate possible deficiency.
Sample Type
Blood
Preparation
Required
Category
Vitamin Test
Service
Diagnostic Testing
Before Your Test
Test Preparation
Follow laboratory instructions. Fasting requirements may vary depending on other tests.
Frequently Asked Questions
Questions About This Test
A Vitamin B12 test measures the amount of vitamin B12 in the blood and may be used when vitamin B12 deficiency is suspected.