Carbon monoxide testing
During your pregnancy, we’ll offer you a carbon monoxide test, whether you smoke or not. This is because you can have raised carbon monoxide levels for other reasons.
To take the test, we’ll ask you to blow into a small tube. This will tell us how much carbon monoxide you have in your system.
We sometimes see higher than normal levels of carbon monoxide if you have faulty gas equipment in your home. We’ll advise you to get your gas equipment checked if your test results are higher than normal, and you do not smoke or live with someone who smokes.