by a blood test
Riboflavin status is diagnosed using a test conducted on red blood cells that measures the activity of an enzyme called glutathione reductase.
HIV or AIDS is usually diagnosed via a blood test.
Hypercholesterolemia is diagnosed by using a blood test. A blood specimen is obtained after the patient does not eat or drink anything (except water) for 12 hours. The fasting is done to measure the LDL and HDL cholesterol.
It is diagnosed through a blood test (a CBC, or complete blood count), which shows the levels of red blood cells in the blood.
You get diagnosed with a blood test, and a personalized protocol is placed as a perscription.
Mononucleosis usually is diagnosed by a blood test--called a mono spot test--that measures anti-bodies to EBV.
I don't think Arthritis can be diagnosed by blood test. It is a physical phenomena
Myopathy is diagnosed by blood serum enzyme test; electromyogram; a muscle tissue biopsy.
Heartworms are diagnosed via a blood test.