Many fertility clinics use a BMI range when reviewing surrogate candidates, but there is no single universal cutoff. A program may publish one range while the final clinic uses another. The clinic also reviews blood pressure, blood sugar, pregnancy history, medications, surgical history, and current health.
A BMI number can affect eligibility, but it should not be used to shame you or replace an individual medical review.
Keisha saw one number and stopped reading
Keisha had two uncomplicated pregnancies. She worked on her feet, had normal blood pressure, and felt healthy. Her BMI was just above the range shown on an agency page.
She expected a lecture. Instead, the coordinator confirmed the current clinic requirement and explained that the clinic also needed her delivery records and recent health information. Keisha asked whether a later review was possible and what evidence would be required.
The answer was still a pause, but it became a clear medical threshold instead of a judgment about her worth.
Why clinics may consider BMI
BMI is a screening measure based on height and weight. It does not show every part of health. Clinics may use it with other information when considering medication dosing, anesthesia, pregnancy complications, monitoring, and their own treatment protocols.
ACOG recommends prepregnancy counseling that considers weight, medical conditions, medications, and earlier pregnancy outcomes together.1
Ask for an exact answer—not “lose some weight”
- Which clinic will make the final medical decision?
- What is its current BMI range?
- How and when is height and weight measured?
- Is the decision based only on BMI or another health concern too?
- Can the clinic review you again later?
- Will a different clinic use a different standard?
Do not use unsafe shortcuts for an application
Do not dehydrate yourself, skip meals, stop medicine, or use weight-loss drugs or supplements without medical guidance. A short-term change on a scale does not create a safe pregnancy plan.
If you want to change your health, start with your own clinician. Ask about blood pressure, blood sugar, nutrition, movement, sleep, and medication—not only one target number.
What else the clinic reviews
- Healthy prior pregnancy and delivery
- Gestational diabetes or high blood pressure history
- C-sections and other surgeries
- Current conditions and medications
- Nicotine or substance use
- Emotional readiness and family support
ASRM recommends a full medical evaluation for prospective gestational carriers.2
Common questions, answered
Can another clinic accept a different BMI?
Possibly. Clinics can use different protocols and medical judgment. Share the same complete history with every clinic.
What if my BMI is below the minimum?
Low BMI can also prompt review. Ask for the clinic’s range and discuss your health with your own clinician.
Will a healthy pregnancy override the cutoff?
It helps the clinic understand your history, but it may not override a current protocol or another medical concern.
You deserve a clear medical answer
Keisha left with a next step instead of shame. Review medical screening and how PCOS may be reviewed.