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How a Vitamin B12 Blood Test Can Help Confirm Your Levels

A vitamin B12 blood test is a reliable way to determine if you have adequate levels of this crucial nutrient. Vitamin B12 is ...
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How do I test my testosterone levels?

This article was reviewed by Felix Gussone, MD. If you’ve been feeling a bit more couch potato than go-getter lately, dragging through the day, snapping at people for no reason, or wondering where ...