Obstetrics• Updated 21 October 2026

Pregnancy Blood Test (Beta-hCG)

A blood test that detects and measures the pregnancy hormone hCG.

Results: Usually within a day Specimen: Blood

Quick Summary

Primary Purpose

To confirm pregnancy early and monitor early pregnancy problems.

What It Measures

Beta-hCG level.

Preparation

No preparation needed.

Overview

Blood tests detect pregnancy earlier than urine tests.

In early pregnancy, hCG roughly doubles every two to three days.

What It Measures

Beta-hCG

Pregnancy hormone.

How It's Performed

  1. 01

    Preparation

    Usually no special preparation. Tell the staff about medicines you take.

  2. 02

    Blood sample

    A small amount of blood is taken from a vein in your arm with a thin needle.

  3. 03

    Afterwards

    Press on the spot for a minute. A small bruise is common; you can go back to normal activities.

Reference Ranges

Note: Normal ranges vary by laboratory. Consult your report for the specific reference used.

ParameterTypical Range (Adult)Units
Not pregnantBelow 5mIU/mL

Interpreting Results & Next Steps

Discuss with Doctor

Normal ranges differ between laboratories, ages and sexes; always use the range printed on your report and ask your doctor what your results mean.

If values are High:

A positive result means pregnancy; levels that rise abnormally may need scans to check for ectopic pregnancy or miscarriage.

Sources and further reading

Last updated 21 October 2026. For more detail, see these trusted health organisations.

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