Trigger Shot
medicationDefinition
The final injection given approximately 36 hours before egg retrieval to trigger the final maturation of eggs.
In IVF Treatment
The trigger shot timing is precise and must be administered at the exact time specified by your doctor. Two types are used: hCG triggers (Ovidrel, Pregnyl) and GnRH agonist triggers (Lupron). The choice affects OHSS risk and luteal phase supplementation needs.
Frequently Asked Questions
What if I take the trigger shot at the wrong time?
Contact your clinic immediately. The timing window (typically within 1-2 hours) is important to egg maturity at retrieval. Your team can advise whether adjustment is needed.