Doctors Warn Against 5 Deceptive Lab Tests

The article highlights five outdated lab tests—total serum vitamin B12, serum iron, creatinine, total testosterone, and total cholesterol—that clinicians should replace with more precise, evidence-based biomarkers like holotranscobalamin, ferritin with CRP, cystatin C, free testosterone, and apolipoprotein B to improve diagnosis and patient care.