Gamma-GT and CDT; liver function and alcohol intake.

CDT; marker for excessive alcohol consumption.

CEA; tumor marker for follow-up.

Serum chloride; acid-base and fluid balance.

Total cholesterol; part of lipid profile.

Total cholesterol, HDL, LDL, and triglycerides.

Cholinesterase activity; liver function or organophosphate exposure.

Chromogranin A; neuroendocrine marker.

CK; muscle damage or exertion.

CMV-IgM and IgG; recent or past infection.

Cortisol; daily rhythm and adrenal function.

DHEA; precursor of androgens and estrogens.

DHEA‑S; adrenal androgens.

Diphtheria antitoxins; protection level.

DHT; androgens and hair loss.

Total protein; nutritional status and liver/kidney.

Total protein and electrophoresis; protein spectrum.

ENA blood test; autoimmune antibodies.

ENA antibodies; autoimmune serology.

Estrone (E1); estrogen status.

Factor V Leiden; thrombosis risk.

Ferritin; iron storage.

Ferritin and Hb; iron status.

Fibrinogen; blood clotting.