Surrogate medical screening is the stage where a fertility clinic reviews your records and examines you in person. It confirms whether you can carry a pregnancy safely and whether an embryo transfer is likely to succeed. It usually comes after an agency's pre-screening and before any surrogacy contract is signed. It typically has five parts: a records review, a physical and uterine exam, lab and infectious disease testing, a psychological evaluation, and a decision. The clinic makes that decision, not the agency, and not this site.
You may have already cleared an agency's first round of questions and want to know what the medical part involves before you go further. This guide walks through it in order and covers how long it takes as a general estimate. It also explains what can pause it, so nothing comes as a surprise.
Before You Start: What Medical Screening Is and Who Orders It
Medical screening is ordered by the intended parents' fertility clinic. The clinic sets its own standards. Most clinics use guidance from the American Society for Reproductive Medicine (ASRM), the professional body for fertility medicine in the United States, as a baseline. ASRM guidance is a set of recommendations, not federal law. Each clinic interprets it, and some are stricter than others.
Screening sits in the middle of the larger qualification path. You apply to an agency. The agency pre-screens you and may match you with intended parents. Their clinic then screens you medically. Legal contracts usually follow medical clearance. Our overview of the surrogate screening process covers the agency and legal steps on either side.
Two stages are easy to confuse:
- Preliminary eligibility is an early check of basics such as age, pregnancy history and general health. An agency or an online tool like ours can tell you whether your situation looks likely to fit.
- Medical clearance is a physician's decision after reviewing your records and examining you.
Passing the first does not mean you will pass the second.
The cost of the screening workup is generally the intended parents' responsibility, not yours. Base pay usually starts later, once a contract is in place. Ask your agency in writing who pays for each part of screening and for any travel, and how time off work for appointments is handled.
Step 1: Medical Records Review
The clinic reads your history before it schedules any in-person testing. A reproductive endocrinologist (RE), a physician specialising in fertility, or a nurse coordinator at the clinic usually does this review.
The clinic commonly requests:
- OB/GYN records from every prior pregnancy and delivery, including complications, gestational age at birth and delivery method.
- Records of any cesarean sections. The number of prior C-sections is a common limiting factor. Many clinics set a ceiling, often around two or three, and some assess each case individually. The physician decides based on your records.
- BMI documentation. Many clinics look for a BMI in roughly the 19 to 32 range. Some are narrower and some go higher. This is a common range, not a national rule.
- Mental health history, if you have any treatment or diagnosis on record.
- Prior fertility treatments or reproductive surgeries, such as a D&C, fibroid removal or treatment for endometriosis.
The clinic is looking for anything that could make a pregnancy riskier for you or make a transfer less likely to succeed.
Missing records are one of the most common causes of delay. Delivery records held by a hospital you used years ago can take weeks to arrive.
Step 2: Physical Examination and Uterine Evaluation
This is the centre of medical screening, and it is a hands-on appointment.
It usually takes place at the intended parents' fertility clinic. That may mean travel if the clinic is not near you, sometimes a flight and an overnight stay. Under most arrangements the intended parents cover travel for screening. Confirm how and when you are reimbursed before you book anything.
The visit typically includes:
- A general physical exam: blood pressure, heart rate, height, weight and an overall health assessment. - A gynecological exam, which may include a Pap smear if you are not current. - A transvaginal ultrasound. A probe placed in the vagina shows the uterine lining and the ovaries. - A uterine cavity evaluation, using one of two methods: - Saline infusion sonohysterography (SIS): sterile saline is passed through a thin catheter into the uterus while an ultrasound shows the inside of the cavity. Many women describe cramping during and shortly after. - Hysteroscopy: a thin camera is passed through the cervix to look directly inside the uterus. Depending on the clinic, it may be done in the office or with sedation.
The uterine evaluation looks for fibroids, polyps, a uterine septum (a band of tissue dividing the cavity), adhesions or scarring, and other structural issues that could affect implantation or the pregnancy.
Step 3: Laboratory and Infectious Disease Testing
Several vials of blood and a urine sample usually cover this step, often drawn on the same day as the exam.
Standard labs commonly include:
- Complete blood count (CBC)
- Metabolic panel
- Thyroid function
- Blood type and Rh factor
The infectious disease panel commonly covers HIV 1 and 2, hepatitis B surface antigen and core antibody, hepatitis C antibody, HTLV I/II, syphilis (RPR or VDRL), CMV (cytomegalovirus) IgG and IgM, gonorrhea and chlamydia.
The federal regulation behind much of this is FDA 21 CFR Part 1271. It sets donor eligibility and infectious disease testing rules for human cells and tissues, including the reproductive tissue used to create embryos. Clinics commonly apply a similar panel to gestational carriers alongside ASRM guidance. The exact list can differ by clinic.
Many clinics also run:
- Urine drug screening.
- Nicotine or cotinine testing. Most clinics require non-smoking status, and some test for nicotine specifically.
If you have a partner, they will typically be asked for infectious disease testing too. Some infections can pass within a household. Clinic policy, informed by the federal testing framework, usually extends to the partner for that reason.
Lab turnaround is typically a few days to a few weeks, depending on the lab and the test.
