Does B-12 Help High Blood Pressure?

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Definition

The vitamin B12 level is a test to tell how much vitamin B12 is in your blood.


How the test is performed

Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.

Next, the health care provider gently inserts a needle into the vein. The blood collects...

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