Finding the right tests…
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Finding the right tests…
Hormonal
Beta hCG is the hormone the placenta starts producing once a fertilized egg implants in the uterus, and it's the hormone every pregnancy test is built to detect. The quantitative blood version measures the exact amount in your blood, letting your doctor watch how a very early pregnancy is developing, since a healthy level should almost double roughly every 48 hours at first. A slower rise, or one that's dropping, can point to a possible miscarriage or ectopic pregnancy and usually means closer follow-up. Separately, in men and in women who aren't pregnant, this same hormone can be produced by certain rare cancers, including testicular germ cell tumours, so your doctor may order it as a tumour marker instead.
This test measures the concentration of beta hCG in your blood, reported in milli-international units per millilitre, and can detect even a small, early rise well before a home urine test would typically turn positive. A standard blood draw is used, and no fasting is required. Because early pregnancy hCG rises quickly over days, your doctor may order two draws roughly 48 hours apart to compare the trend rather than reading a single number, since the rate of rise tells them more than any one value in isolation.
Once a fertilized egg implants in your uterus, the placenta begins producing hCG almost immediately, and this test measures exactly that hormone. It's the basis of every pregnancy test that exists, but the quantitative blood version goes a step further than a simple yes-or-no urine strip by measuring the actual concentration.
In a typical early pregnancy, hCG rises quickly and predictably, almost doubling roughly every 48 hours. That expected pattern is what makes repeat testing useful — a level that's rising too slowly, plateauing, or falling can be an early sign of a possible miscarriage or an ectopic pregnancy, sometimes before other symptoms appear.
Away from pregnancy entirely, this same hormone can be produced by certain rare tumours, including testicular germ cell tumours in men and some ovarian and gestational tumours in women who aren't pregnant. In those situations, hCG functions purely as a tumour marker, used to help evaluate the tumour and track how it responds to treatment, with no connection to pregnancy at all.
- Trend across repeat tests matters more than a single value - Used differently in pregnancy versus cancer monitoring - Detectable in blood before most urine tests turn positive
A quantitative blood test can detect hCG in your blood earlier than most home urine tests, and in early pregnancy the level should almost double roughly every 48 hours, according to MedlinePlus.
In a healthy early pregnancy, hCG should almost double roughly every 48 hours, according to MedlinePlus, so a slower rise or a falling level can raise concern for a possible miscarriage or ectopic pregnancy, and usually prompts closer monitoring or a repeat test.
Yes. In men, hCG isn't related to pregnancy at all — MedlinePlus notes it's used to help diagnose or monitor conditions including certain testicular cancers.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
No. It's used to help evaluate a suspected tumour based on symptoms or findings, and to monitor a diagnosed cancer's treatment response, not as a general cancer screening test in people without symptoms.
A qualitative test just gives a positive or negative pregnancy result, while a quantitative test measures the exact hCG concentration in your blood, which lets your doctor track a trend over repeat draws rather than a single yes-or-no answer, per MedlinePlus.
Normal levels depend heavily on how many weeks pregnant you are, since hCG rises quickly through early pregnancy, almost doubling every 48 hours, and then levels off, according to MedlinePlus. Ranges vary by lab, so your report's own reference range, read with your doctor, is what matters most.
No specific fasting requirement is described for this test, but ask your doctor or the centre when you book, since practice can vary.