How Is PCOS/PMOS Diagnosed? What to Expect When Getting Tested

Wondering whether you have polycystic ovary syndrome, recently renamed polyendocrine metabolic ovarian syndrome (PCOS/PMOS), can leave you feeling uneasy while you wait for answers. Getting a PCOS/PMOS diagnosis can also feel like a relief, because confusing symptoms like unpredictable periods, stubborn acne, or new hair growth finally have an explanation.

At Fertility and Surgical Associates of California (FSAC), we’ll walk with you through every test and every result, so you’ll always know where you stand and what comes next.

What Doctors Look For in a PCOS/PMOS Diagnosis – The Rotterdam Criteria

PMOS is the new name for PCOS, and the American Society for Reproductive Medicine (ASRM) endorsed PMOS in 2026. The updated name moves the focus away from ovarian “cysts” and toward the hormonal and metabolic changes PCOS/PMOS causes across the whole body.

Your PCOS/PMOS diagnosis still follows the Rotterdam criteria. Adults need at least two of the three signs below, once other conditions with similar symptoms are ruled out, based on the 2023 international PCOS guideline recommendations shared by ASRM.

Irregular or Absent Menstrual Cycles

Your menstrual cycle is one of the first things your doctor will ask about, because PCOS/PMOS can disrupt ovulation. For adults, cycles count as irregular when they are shorter than 21 days, longer than 35 days, or happen fewer than 8 times a year, and a single cycle lasting longer than 90 days counts too.

Regular periods don’t always mean regular ovulation. If your doctor wants to confirm whether you’re ovulating, a progesterone blood test can help. Tracking your periods in an app or on a calendar for a few months before your appointment will also give your doctor a helpful starting point.

Follicle Count on Ultrasound

On a transvaginal ultrasound, your provider will count the small follicles in each ovary. Finding 20 or more follicles in at least one ovary meets the threshold for polycystic ovarian morphology in adults.

A higher follicle count can show up in people who don’t have PCOS/PMOS, so an ultrasound finding is only one part of the picture. Adults can also have an anti-Müllerian hormone (AMH) blood test in place of the ultrasound to assess follicle count.

Signs of Higher Androgen Levels

Androgens such as testosterone can be higher with PCOS/PMOS, and your doctor will look for clues in two places:

• Lab results from total and free testosterone testing.
• Physical changes like extra hair on the face, chest, or back (hirsutism), acne, or hair thinning on the scalp.

Extra hair growth is the clearest physical sign, while acne or hair thinning on their own are weaker signs. Hormonal birth control can affect androgen results, and your doctor may suggest pausing the pill for at least three months if accurate bloodwork is needed.

What PCOS/PMOS Testing Involves

PCOS/PMOS testing at our fertility testing visits will combine a conversation, lab work, and imaging. Your appointment will include:

• A detailed conversation about your cycles, symptoms, and health history.
• A look at your family history, because PCOS/PMOS tends to run in families.
• Hormone bloodwork, including testosterone and AMH.
• Blood sugar testing, because PCOS/PMOS is closely tied to insulin resistance, which can lead to unexpected weight gain or make it harder to lose weight.
• Lab tests to rule out conditions that can look like PCOS/PMOS, including thyroid stimulating hormone (TSH), prolactin, 17-hydroxyprogesterone, and follicle-stimulating hormone (FSH).
• A pelvic ultrasound, performed by your provider, to look at your ovaries and uterine lining.

Your first consultation can take place in person or by telehealth, whichever feels easier for you.

Diagnostic testing is billed separately from treatment and may be covered by insurance even when treatment isn’t. Since January 1, 2026, California’s SB 729 has also required fully insured, large-group plans regulated in California, generally for employers with 100 or more employees, to cover infertility diagnosis and treatment, including IVF, and our billing team will help you check your benefits.

How Is PCOS/PMOS Diagnosed and How Long Does Testing Take?

The timeline depends on which signs show up first. If you have irregular cycles along with visible signs of higher androgens, your doctor can confirm PCOS/PMOS after ruling out other conditions, with no ultrasound or AMH test needed.

When only one sign is clear, your doctor will order more bloodwork, an ultrasound, or a follow-up visit to complete the picture. Taking those extra steps helps make sure your diagnosis is accurate, and our team will keep you informed at each stage.

What Happens After a PCOS/PMOS Diagnosis

A PCOS/PMOS diagnosis gives your care team a clear starting point for a plan built around your goals. If you’d like to get pregnant soon, our specialists may talk with you about options like ovulation induction medication, intrauterine insemination (IUI), or in vitro fertilization (IVF) with PCOS/PMOS. Your doctor will explain how each option fits your test results, and you’ll choose your next steps together.

If you’re not planning a pregnancy yet, your plan will center on managing symptoms and protecting your long-term health. Whenever you’re ready to start building your family, our team will be here for you.

Questions to Ask at Your First Appointment

Coming prepared helps you make the most of your time with your doctor. Before your visit, jot down notes on:

• How often your periods come, how long they last, and any recent changes, including changes in your weight.
• Whether anyone in your family has PCOS/PMOS or diabetes.
• The symptoms you’ve noticed, even ones that seem unrelated.
• Every medication and supplement you take, including hormonal birth control.
• Your hopes for growing your family, now or in the future.

During the visit, feel free to ask which tests you’ll need, when results will come back, and how a PCOS/PMOS diagnosis would shape your options.

Talk to FSAC’s Care Team

Answers about PCOS/PMOS can bring both clarity and relief after a long stretch of confusing symptoms. Our team in Thousand Oaks, Encino, and Santa Monica will listen to your story, guide you through testing, and support you every step of the way.

Contact FSAC to schedule your first appointment, in person or by telehealth.