Do I need a Pregnancy, hCG test?

Are you wondering whether you might be pregnant, or looking to confirm early pregnancy? Whether you've noticed changes in your body or simply want to know for sure, a quantitative hCG blood test can help you get clarity quickly.

This biomarker measures the exact amount of human chorionic gonadotropin (hCG) — the pregnancy hormone produced by the placenta — in your bloodstream.

Understanding your hCG levels can empower you to make informed decisions about your health and next steps. A quantitative result gives you precise information rather than just a yes or no, which may be especially helpful in early pregnancy when hCG levels change rapidly. When included in your Listen Health assessment, this test becomes part of a fuller picture of your wellbeing at an important time in your life.

Pregnancy, hCG — Key Facts
MeasuresUsed to detect and monitor early pregnancy
CategoryFemale Health
UnitIU/L
Tested inListen Health Standard & Premium membership (100+ biomarkers)
Reviewed byDr Jamie Deans, MBChB

What is it?

The quantitative hCG pregnancy test measures the exact amount of the pregnancy hormone hCG in your blood. Results are reported as a number (IU/L or mIU/mL), rather than just “positive” or “negative.”

hCG is a hormone made by the placenta shortly after implantation. It can usually be detected in blood and urine 8–11 days after conception and rises quickly in early pregnancy, making it a very reliable marker of early pregnancy.

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Why does it matter?

Because this test gives an exact value, it allows clinicians to track how hCG levels change over time. This is crucial for:

  • Confirming and monitoring early pregnancy progression

  • Identifying ectopic pregnancies (pregnancy outside the uterus)

  • Detecting failing or non-viable pregnancies

  • Diagnosing and monitoring gestational trophoblastic disease

  • Contributing to prenatal screening for chromosomal conditions

Watching whether hCG levels are rising appropriately over days or weeks helps distinguish a normal pregnancy from one that may need medical follow-up.

References

  1. National Library of Medicine. (n.d.). Pregnancy test. MedlinePlus.

  2. Greene, D. N., & Grenache, D. G. (2015). Pathology consultation on human chorionic gonadotropin testing for pregnancy assessment. American Journal of Clinical Pathology, 144(6), 830–836. https://doi.org/10.1309/AJCP7O7VAREDUYIJ

  3. Montagnana, M., Trenti, T., Aloe, R., Cervellin, G., & Lippi, G. (2011). Human chorionic gonadotropin in pregnancy diagnostics. Clinica Chimica Acta, 412(17–18), 1515–1520. https://doi.org/10.1016/j.cca.2011.05.025

  4. Stenman, U. H., & Alfthan, H. (2013). Determination of human chorionic gonadotropin. Best Practice & Research Clinical Endocrinology & Metabolism, 27(6), 783–793. https://doi.org/10.1016/j.beem.2013.10.005

  5. Herkert, D., Meljen, V., Muasher, L., et al. (2022). Human chorionic gonadotropin: A review of the literature. Obstetrical & Gynecological Survey, 77(9), 539–546. https://doi.org/10.1097/OGX.0000000000001053

Frequently Asked Questions

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AHPRA Disclaimer: This information is general in nature and should not replace individual medical advice. Always discuss your test results and health concerns with a registered healthcare practitioner.