**1.1 Pregnant women testing**

If toxoplasmosis serology is unknown before women became pregnant, then start by finding it out as early as possible within the first trimester [1–4].

An IgG test is the first thing to do to know the patient's serology. Which test should be selected? Laboratories must maximize their available equipment, resources, and capabilities, to choose their tests. Do any test, it is better than doing nothing.

Once an IgG result is obtained, two paths will open:

