Wallach's Interpretation of Diagnostic Tests: Pathways to Arriving at a Clinical Diagnosis (1171 page)

   Analytic factors

   Different assays yield different values

   Antibody cross-reactivity

   High titer heterophile antibodies

   Other diseases/organs

   Also found in small amounts in other cancers (sweat and salivary glands, breast, colon, lung, ovary) and in Skene glands of female urethra and in term placenta

   Acute renal failure

   Acute myocardial infarction

Decreased In

   Ejaculation within 24–48 hours

   Castration

   Antiandrogen drugs (e.g., finasteride)

   Radiation therapy

   Prostatectomy

   PSA falls 17% in 3 days after lying in hospital