hCG, Total, Quantitative

Casandra

Casandra Test Code QD48471Version 1 (DRAFT)

Performing Lab

Lab Quest DiagnosticsLab Test ID 8396CPT Code 84702

hCG, Total, Quantitative

Also known as: Tumor Marker, B-hCG, Pregnancy, Human Chorionic Gonadotropin (hCG), Chorionic Gonadotropin

Clinical Use

Order Test

Use

The quantitative hCG test measures total human chorionic gonadotropin (intact hCG and free β‑subunits) in serum to aid in early pregnancy detection. hCG becomes detectable approximately 7 to 10 days following conception and increases through the first trimester. It may also be produced in certain non‑pregnancy conditions such as trophoblastic disease or testicular neoplasms. Quantitative measurement assists in confirming pregnancy and monitoring hCG trends. ([questdiagnostics.com](https://www.questdiagnostics.com/healthcare-professionals/clinical-education-center/faq/faq114?utm_source=openai))

Special Instructions

Not provided.

Limitations

Heterophilic antibodies can cause low false‑positive results. Phantom hCG may lead to discordant results between serum and urine. Pituitary‑derived hCG may be a source of low‑level results in post‑menopausal women. Use of this assay for non‑pregnancy‑related indications such as monitoring cancer has not been FDA cleared or approved. ([jdos.nicholsinstitute.com](https://jdos.nicholsinstitute.com/dos/uslabs/test/185897?utm_source=openai))

Test Details