Polycystic Ovary Syndrome (PCOS)#

Adolescent ovaries normally have many small follicles, and irregular periods are common after periods first begin. Diagnosing PCOS too early can label normal puberty as a disease.

Irregular cycles are common in the first year after the first period. From 1 to 3 years after the first period, very short cycles (<21 days), very long cycles (>45 days), or any cycle longer than 90 days should be assessed. More than 3 years after the first period, cycles shorter than 21 days, longer than 35 days, or fewer than 8 periods per year are considered abnormal.

In adolescents, PCOS should only be diagnosed when both persistent ovulatory dysfunction and hyperandrogenism are present, after other causes are excluded. Ultrasound and AMH should not be used to diagnose PCOS in adolescents.

No. About 20-30% of people with ovaries have a polycystic-appearing ovary on ultrasound without having PCOS. The ovary appearance alone is not enough; you also need irregular ovulation or signs of high androgens to meet PCOS criteria.

Yes. About a third of people with PCOS do not have polycystic-appearing ovaries on ultrasound. Diagnosis is based on the combination of features, not on any single one.

Hyperandrogenism means higher-than-typical levels of male-pattern hormones (androgens like testosterone, free testosterone, DHEA-S). It can be clinical (visible features like acne, hirsutism, scalp hair loss) or biochemical (elevated blood levels). Either form counts toward PCOS diagnosis. Clinical and biochemical hyperandrogenism do not always go together; some people have features without elevated bloodwork.

No. Many people with PCOS have clear skin. Acne is one of several possible clinical signs of high androgens; it is not required. See the Acne page for general acne information.

Acanthosis nigricans is velvety, darker-coloured skin patches that appear in folds (back of the neck, armpits, groin, under the breasts). It is a visible sign of insulin resistance, which is common in PCOS but can also occur with obesity, type 2 diabetes, or rarely other endocrine conditions.

Yes. People with PCOS have higher rates of depression, anxiety, and disordered eating than the general population. Some of this is mediated by hormonal changes; some by the social impact of acne, hair changes, and weight; some by the chronic nature of the condition. Mental-health support is part of comprehensive PCOS care.

Testosterone follows a daily rhythm and is highest in the morning (roughly 7-10 am). DHEA-S follows a similar pattern. Morning timing also reduces variability if you are tracking results over time.

Ideally yes. Hormonal contraception suppresses your natural FSH, LH, estradiol, and androgen pattern. For accurate baseline PCOS testing, plan to stop hormonal contraception for about 3 months before the workup and use non-hormonal contraception in the interim if pregnancy prevention is needed.

Testing while on hormonal contraception can still identify some important abnormalities, but normal androgen, LH/FSH, or estradiol results while on hormonal contraception do not rule out PCOS because these medications suppress the hormonal pattern. AMH can also be lower while using hormonal contraception, so it should be interpreted cautiously.

No single test is perfect. Calculated free testosterone (from total testosterone and SHBG) is the most commonly used. Direct free-testosterone immunoassays are unreliable and not recommended. DHEA-S helps identify adrenal contribution. 17-OHP screens for the late-onset CAH look-alike. Results need to be interpreted together rather than relying on any single number.

PCOS ovaries often have an increased number of small antral follicles, which can raise AMH. In adults, an elevated AMH can support a PCOS diagnosis and may be used instead of ultrasound to define polycystic ovarian morphology.

AMH is not a stand-alone diagnostic test. Cutoffs vary by age, assay, and laboratory, so AMH must be interpreted together with cycle history, androgen features, and the exclusion of other causes. AMH should not be used to diagnose PCOS in adolescents.

See Anti-Mullerian Hormone (AMH).

In PCOS, LH on day 3 is often higher than FSH, giving an LH:FSH ratio above 2 or 3. This is a supportive finding but not part of the formal diagnostic criteria and is not specific enough to diagnose PCOS on its own.

Yes. So-called "lean PCOS" can still involve insulin resistance, though it is often less pronounced than in PCOS with higher weight. Fasting glucose alone can miss impaired glucose tolerance; HbA1c adds information, and a 75-g OGTT is the most accurate test when there is a higher concern for diabetes risk.

Screen for prediabetes and type 2 diabetes at PCOS diagnosis, then every 1-3 years depending on risk. Screening should be more frequent with higher weight, family history of diabetes, prior gestational diabetes, signs of insulin resistance, or abnormal previous results. A 75-g OGTT is the most accurate test in PCOS, while fasting glucose and HbA1c are practical alternatives commonly used in primary care. During pregnancy planning or pregnancy, diabetes screening should be discussed early with the pregnancy-care clinician.

If you do not ovulate, you do not produce the progesterone surge that normally tells the uterine lining to shed each cycle. Over years, the lining can become abnormally thick (endometrial hyperplasia), which can progress to cancer. People with PCOS who go many months between periods should have a period induced regularly using either a withdrawal bleed (cyclic progesterone) or continuous hormonal contraception. Anyone with PCOS and very heavy or unusual bleeding should also have an endometrial assessment (ultrasound, sometimes biopsy).

Even if fertility is not a current goal, PCOS treatment matters for:

• Cycle regulation and lining protection (to reduce endometrial cancer risk if you have very infrequent periods)
• Cosmetic features (acne, hirsutism, hair loss) if those are bothering you
• Metabolic and cardiovascular risk - this matters in every decade

If your cycles are reasonably regular (at least 8 per year), your androgen features are mild, and your metabolic screen is normal, observation with periodic re-check is reasonable.

It does several things at once: regulates the cycle so you bleed predictably, protects the uterine lining, suppresses the ovaries' androgen production, and raises SHBG (which mops up free testosterone). Most people with PCOS see acne and hirsutism improve over 3-6 months. Hair loss can take longer.

Inositol (myo-inositol, often combined with D-chiro-inositol) is one of the better-studied supplements in PCOS. Several randomized trials suggest improvements in cycle regularity, insulin sensitivity, and ovulation. Inositol is generally well tolerated. Vitamin D supplementation is reasonable for those with low levels. Omega-3 has small effects on triglycerides. None of these replace lifestyle or prescription treatment when those are indicated, but they can be useful adjuncts.

Not exactly reverse, but a 5-10% reduction in body weight can restore ovulation, improve insulin sensitivity, and lower androgen levels in many people. PCOS does not fully go away with weight loss, but the metabolic and reproductive features can shift dramatically. Weight loss is one of the most effective single interventions if it is achievable for you.

For fertility workup, TeleTest currently orders AMH only. Other fertility-related panels (day-3 hormones, mid-luteal progesterone, prolactin, TSH, ferritin and vitamin D in the fertility context, and a partner's semen analysis) are under review by our medical team and not yet offered through TeleTest - you would arrange those through your family doctor or a fertility clinic. TeleTest can help with weight-management discussions and discuss what your AMH result means in your situation. Ovulation-induction medication is part of a fertility-clinic visit; TeleTest does not prescribe it.

In PCOS with clearly irregular cycles, the usual "wait 12 months" rule does not really apply because you may not be ovulating in many of those months. It is reasonable to start a workup and consider a fertility referral after 6-12 months if cycles are irregular, sooner if you are 35 or older.

Yes, in most cases. We will review your blood pressure, migraine history, blood-clot risk factors, smoking status, and overall medical history. Combined pill, progestin-only pill, and the hormonal IUD (with insertion done in a clinic) are all options. The specific choice depends on your situation. See the Birth Control page for method comparisons.

Yes, in appropriate situations. Anti-androgen medications can cause harm to a developing fetus, so reliable contraception is required throughout treatment. We monitor potassium and kidney function on the typical anti-androgen used in PCOS.

No, PCOS is a chronic condition, but its features can often be controlled well. Weight loss, lifestyle changes, and the right medication for your priorities can normalize cycles, clear acne, reduce hirsutism, and bring metabolic measures into the normal range.

The cosmetic and reproductive features tend to ease after menopause, but the metabolic and cardiovascular risks remain. Long-term diabetes and cardiovascular screening continues to matter.

Possibly. Clinical signs of high androgens (acne, hirsutism, scalp hair loss) count just as much as biochemical hyperandrogenism in the Rotterdam criteria. About a third of people with PCOS have normal androgen bloodwork despite clinical features.

"Lean PCOS" describes someone with PCOS who is not overweight. It is still PCOS - the diagnostic criteria do not depend on weight - and insulin resistance can still be present, just often less severe. People with lean PCOS sometimes feel dismissed because the typical PCOS pattern is associated with higher weight. Same workup, same treatment principles.

Late-onset CAH is a less common condition that looks a lot like PCOS (irregular cycles, hirsutism, acne) but is caused by an inherited enzyme deficiency in the adrenal gland. It is screened for by checking 17-hydroxyprogesterone (17-OHP). If 17-OHP is elevated, an ACTH stimulation test is needed to confirm. Treatment is different from PCOS, so screening is important before settling on a PCOS label.

Technically no - PCOS is by definition a condition affecting people with ovaries. However, male relatives of people with PCOS have higher rates of early hair loss, insulin resistance, and metabolic syndrome, suggesting shared genetics.

Cycle regulation on hormonal birth control: 1-3 cycles. Acne improvement: 3-6 months. Hirsutism improvement: 6-12 months (and ongoing maintenance). Insulin sensitivity changes on insulin-sensitizing medication: 2-3 months. Weight changes: variable and sustained over many months. Patience matters; PCOS treatment is a long game.

PCOS does run in families. If your daughter has irregular cycles persisting more than 2-3 years past her first period, acne not responding to typical care, or hirsutism, it is reasonable to evaluate. Avoid testing too early in puberty because normal adolescent ovaries can mimic PCOS.

PCOS is associated with a substantially higher risk of type 2 diabetes and higher rates of high blood pressure, dyslipidemia, sleep apnea, and metabolic syndrome. Whether PCOS independently raises heart-attack or stroke risk beyond these factors is still debated, but the metabolic risk pathway is important. Long-term care includes periodic blood-pressure checks, lipid screening, diabetes screening, and lifestyle support.

Yes. PCOS Canada and PCOS Awareness Association are common starting points. Local fertility clinics and endocrinology programs often have patient education resources too.