If positive as a screening test, tells you where to look. Serum Chemistry investigates the fluid and electrolyte balance in plasma. Serologic testing checks immune system function. Endocrine function tests check endocrine organ function. Blood tests can give much information about the state of a patient's health.
Blood is formed in bone marrow, circulates throughout body, and is broken down in liver.
Kidney and other organs also play a role in blood production. Involved in hemostasis. Measure concentration to get information regarding organ function. Certain enzymes, if present in the blood, indicate that an organ is leaking the enzyme into the blood due to organ damage. Hormones are controlled by feedback loops.