Living with symptoms that don’t quite add up, and wondering whether polycystic ovary syndrome, now called polyendocrine metabolic ovarian syndrome (PCOS/PMOS), might be the reason, can feel unsettling. Finally getting a diagnosis can bring welcome relief, because irregular periods, acne, or extra hair growth that once felt random now have a clear explanation.
At InVia Fertility Specialists, we understand how much hope and worry you may bring to your first visit, and our team will be there to answer your questions at every step of testing.
What Doctors Look For in a PCOS/PMOS Diagnosis - The Rotterdam Criteria
PMOS is the updated name for PCOS. The American Society for Reproductive Medicine (ASRM) endorsed the change to PMOS in 2026, because the condition affects hormone and metabolic health across the whole body, and the old focus on ovarian “cysts” left much of that out.
Diagnosis itself hasn’t changed. Doctors still use the Rotterdam criteria, under which adults need two of the three signs below, plus testing to rule out other conditions, according to the 2023 international PCOS guideline recommendations from ASRM.
Irregular or Absent Menstrual Cycles
Cycle history is one of the first topics your doctor will cover, because irregular periods can be the earliest clue that ovulation isn’t happening on a regular schedule. In adults, cycles shorter than 21 days, longer than 35 days, or fewer than 8 per year count as irregular, and so does any single cycle longer than 90 days.
Even with periods that seem regular, ovulation can still be irregular. In that case, a progesterone blood test can help your doctor confirm what’s happening.
Follicle Count on Ultrasound
On a transvaginal ultrasound, your provider will count the small follicles in each ovary, the fluid-filled sacs where eggs develop. Finding 20 or more follicles in at least one ovary meets the adult threshold.
An ultrasound finding alone isn’t enough for a PCOS/PMOS diagnosis, since a higher follicle count can show up without the condition. Adults may have an anti-Müllerian hormone (AMH) blood test in place of the ultrasound to assess follicle count.
Signs of Higher Androgen Levels
Higher levels of androgens, the group of hormones that includes testosterone, can appear in two ways, and your doctor will consider both:
- Bloodwork measuring total and free testosterone.
- Physical signs, such as hair growth on the face, chest, or back (hirsutism), acne, or thinning scalp hair.
Of these physical signs, hirsutism is the strongest indicator, while acne or hair thinning alone tell your doctor less. Birth control pills can lower androgen results, so your doctor may ask you to pause the pill for at least three months if precise bloodwork is needed.
What PCOS/PMOS Testing Involves
At InVia, PCOS/PMOS testing builds on the same evaluation we use when diagnosing infertility. Your testing will include:
- A thorough review of your medical history, menstrual cycles, and symptoms.
- Questions about your family history, since PCOS/PMOS often runs in families.
- Hormone bloodwork, including testosterone, AMH, luteinizing hormone (LH), and estradiol.
- A blood sugar check for insulin resistance, which frequently accompanies PCOS/PMOS and can lead to unexpected weight gain or make it harder to lose weight.
- Tests that rule out other conditions, including thyroid stimulating hormone (TSH), prolactin, 17-hydroxyprogesterone, and follicle-stimulating hormone (FSH).
- A pelvic ultrasound performed by your provider.
Your hormone bloodwork will be drawn on days 2 to 4 of your cycle, and if your periods are irregular, your doctor can order testing on any day. Illinois also requires group health plans that include pregnancy-related benefits to cover infertility diagnosis and treatment, regardless of employer size, so your diagnostic testing may be covered, and our team will help you check your insurance benefits.
How Is PCOS/PMOS Diagnosed and How Long Does Testing Take?
Some people will reach a diagnosis quickly. When irregular cycles and clear physical signs of higher androgens are both present, your doctor can confirm PCOS/PMOS once other conditions are ruled out, without needing an ultrasound or AMH test.
When the picture is less clear, your doctor will order an ultrasound, AMH testing, or a follow-up visit before making a diagnosis. Each added step helps make sure you leave with an accurate answer, and our team will keep you informed along the way, so you’re never left wondering what comes next.
What Happens After a PCOS/PMOS Diagnosis
A PCOS/PMOS diagnosis lets you and your doctor build a plan around what you want next. If you’re hoping to conceive, your plan may include ovulation medication such as clomiphene citrate (Clomid) or letrozole, which can be paired with intrauterine insemination (IUI), or in vitro fertilization (IVF) when that fits your situation better.
If pregnancy isn’t your focus right now, your care will center on managing symptoms and supporting your long-term health. When you’re ready to think about building your family, there’s plenty of good news for people with PCOS/PMOS. You can also learn more about signs and treatment options for PCOS/PMOS whenever you’re ready.
Questions to Ask at Your First Appointment
Taking a few minutes to prepare can help your first appointment feel more focused. Before your visit, consider writing down:
- When your last few periods started, how long each cycle lasted, and any recent changes in your weight.
- Any relatives with PCOS/PMOS or diabetes.
- Symptoms you’ve noticed, including ones that seem unrelated.
- All medications and supplements you take, including birth control.
- Your goals for building a family and your ideal timeline.
During your appointment, you can also ask which tests you’ll need, when you’ll hear results, and how a diagnosis would shape your options.
Talk to InVia’s Care Team
Getting clear answers about PCOS/PMOS can ease months or even years of uncertainty, and you deserve a team that listens closely and explains every result. Our specialists across Arlington Heights, Chicago, Crystal Lake, Hoffman Estates, Northbrook, and Rockford will be with you through testing and every step that follows.
Schedule an appointment to talk through your symptoms and next steps with our care team.
