Your clinic handed you a pamphlet with a cheerful statistic.
"OHSS affects about 1-2% of donors," it said, probably next to a photo of someone smiling in a lab coat.
Here's what that number doesn't tell you.
For donors whose bodies produce 40 or more eggs, severe OHSS risk climbs to 6.8%.
That's not a rounding error.
That's a different conversation entirely, and you deserve to have it before stimulation starts.
The Statistic That's Technically True and Practically Misleading
The 1-2% figure isn't fabricated.
It's just averaged across all donors, including low-responders who produce 5 eggs.
Averages are wonderful things for making everyone feel calm.
They are considerably less wonderful for predicting what happens to your specific body.
A published clinical review found that donors producing 40+ eggs face a 6.8% severe OHSS rate.
That number lives in academic journals, not clinic pamphlets.
What High-Yield Donors Can Do To Screen for Real Risk Before Starting
Your Body Is Not Average, So Stop Planning Like It Is
Some bodies respond to stimulation hormones aggressively.
This isn't a flaw.
It's actually a sign of strong ovarian reserve, which clinics quietly love.
But high response also means more follicles, more fluid shifts, and more risk.
The warning signs worth knowing before you start include a high antral follicle count (AFC) and elevated AMH levels.
If either of those numbers showed up large in your screening bloodwork, that's information.
Is Your AFC Too High To Use a Standard Stimulation Protocol?
The Two Questions Your Pre-Cycle Appointment Should Answer
You probably walked out of your monitoring appointment with fewer answers than you walked in with.
That nurse-donor who admitted she asked only 3 of her 10 prepared questions?
Completely understandable, and completely common.
Here are the two questions that matter most for OHSS risk specifically.
First: What is my AMH level, and what does that mean for my stimulation protocol?
Second: Based on my AFC, what egg yield are you projecting, and how does that change my risk category?
If the answers feel vague, ask again.
You are not being difficult.
You are being a person who wants to keep her ovaries.
The 2 Questions To Ask Your Clinic Before Your Protocol Is Finalized
What High-Risk Doesn't Mean (And What It Actually Does)
High risk doesn't mean certain harm.
6.8% is not 100%.
It means roughly 1 in 15 high-yield donors experiences severe OHSS, not 1 in 2.
What it does mean is that your protocol should be individualized, not copy-pasted from a standard template.
Clinics can use a "coasting" approach, trigger shot adjustments, or lower-dose protocols to reduce risk significantly.
The American Society for Reproductive Medicine recommends GnRH agonist triggers specifically for high-responders as a risk-reduction strategy.
That option exists.
The question is whether your clinic is offering it to you proactively.
How To Get an Individualized Protocol Instead of a One-Size-Fits-All Plan
The Part Where We Talk About PCOS
Women with PCOS already know the feeling of being handed a categorical "no" before anyone looks at their labs.
But PCOS doesn't automatically mean dangerous responder.
It does, however, correlate with higher antral follicle counts.
Which means the individual evaluation matters even more, not less.
If your diagnosis has been used as a door-closer rather than a starting point for real conversation, that's worth pushing back on.
Why Women With PCOS Should Request a Full Lab Review Before Screening Ends
What to Actually Do Before Your Stimulation Protocol Is Finalized
Pull your AMH and AFC numbers from your screening results.
If AMH is above 3.5 ng/mL or AFC is above 20, ask explicitly about a modified protocol.
Ask whether a GnRH agonist trigger is being considered for you.
Ask what the clinic's freeze-all policy is for high-responders, since a frozen embryo transfer eliminates one major risk window.
Write your questions down before the appointment.
All ten of them.
Bring the list.
Read from it out loud if you have to.
Before You Start Injections, Use This Checklist To Catch High-Risk Factors
What Success Actually Looks Like Here
You leave your pre-stimulation appointment knowing your specific risk category.
Not the average.
Yours.
You know your AMH, your AFC, and whether your protocol has been adjusted to match your body's likely response.
You have asked every question on your list.
Donation can be a genuinely meaningful experience, financially and otherwise.
MyEggBank donors earn between $10,000 and $20,000 per cycle, with programs built around comprehensive screening and real support.
But the foundation of any good experience is knowing exactly what you're walking into.
That starts right here, with this number, before the injections begin.
Healthy Women Who Know Their Numbers Are Earning Up To $20,000 Per Cycle