Deficiencies can occur when you don’t get enough B-12 from your diet or when your body can’t use it properly. Typically, vitamin B-12 deficiencies can be detected through the vitamin B-12 test.

Your kidneys filter the uric acid in your body, and it leaves in the urine. Blood tests for uric acid measure this level and can determine if your levels are high, low, or typical. A uric acid blood ...