Trigger shot
A single injection given near the end of stimulation to complete the final maturation of eggs before collection.
In plain English
It's the final injection of your stimulation phase, timed precisely to ripen your eggs ready for collection about 36 hours later.
Why it matters
Its timing has to be exact, since egg collection is scheduled around it, so it's usually the one injection with a very specific time attached.
Related terms
Guides that cover this
Written by patients, not clinicians. This page has not yet been reviewed by a named fertility professional, so it explains published guidance and points you to the original source instead of giving medical advice. It is not medical advice. Decisions about your treatment belong with your own clinic. Read our editorial policy and corrections policy.