Vitamin B12 and Folate Levels
This test checks your vitamin B12 and folate levels, two nutrients your body needs to make healthy red blood cells and maintain nerve function. It's commonly ordered to help evaluate symptoms like fatigue, numbness or tingling, or a type of anemia where red blood cells are unusually large.
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Processed in our own laboratory, not sent to an outside facility.
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About This Test
Vitamin B12 and folate are both essential for making healthy red blood cells and maintaining nerve function, and they're often tested together because deficiencies in either can cause a similar type of anemia with unusually large red blood cells. Testing both at once also matters because high folate levels can sometimes mask a B12 deficiency on a basic blood count, even as related nerve symptoms continue. This test is commonly ordered to help evaluate symptoms like fatigue, numbness or tingling, balance problems, or unusual results on a Complete Blood Count.