TORCH Test
A group of blood tests for infections that can affect pregnancy: toxoplasmosis, rubella, cytomegalovirus and herpes.
Quick Summary
To check for certain infections in pregnancy or when a baby's development raises concerns.
IgM and IgG antibodies to each infection.
No preparation.
Overview
Routine TORCH testing in all pregnancies isn't recommended; it's used for specific reasons.
IgG often shows past infection or immunity.
What It Measures
IgM
Recent infection.
IgG
Past infection or immunity.
How It's Performed
- 01
Blood sample
From a vein.
- 02
Lab
Antibody testing.
- 03
Review
Results interpreted by a specialist.
Interpreting Results & Next Steps
Discuss with Doctor
Your doctor will explain what your result means and what happens next.
If values are High:
Positive IgM needs careful confirmation before decisions are made.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Prenatal Panel(opens in a new tab) · MedlinePlus, US National Library of Medicine