Clinical Library · Hormonal Health
Irregular periods & PCOS: a 7-point checklist before you panic
Two missed cycles and Instagram tells you it's PCOS. Sometimes it is - sometimes it's thyroid, prolactin, stress or a rebound from stopping the pill. Before you commit to a diagnosis, run this checklist. It's the same workup most Indian gynaecologists start with.
What counts as "irregular"
- Cycle shorter than 21 days or longer than 35 days.
- Cycle-to-cycle variation of more than 7-9 days.
- Fewer than 8 cycles a year (oligomenorrhoea).
- Missed periods for 3+ months (amenorrhoea).
A single off cycle after travel, illness or a stressful week is not a pattern.
The 7-point workup
1. TSH + free T4
Thyroid dysfunction is the most-missed cause of irregular cycles. A high TSH (>4) can look identical to PCOS symptomatically.
2. Prolactin
Elevated prolactin (from stress, medications, a pituitary microadenoma) suppresses ovulation. A single test rules it in or out.
3. Fasting insulin + fasting glucose (HOMA-IR)
The core PCOS driver. A fasting insulin >10 or HOMA-IR >2 points at insulin resistance, the target for inositol, berberine and lifestyle changes.
4. Total & free testosterone, SHBG, DHEA-S
Distinguishes PCOS from adrenal androgen excess. Free testosterone is the more useful number.
5. LH : FSH ratio
A ratio >2 on day 2-3 of the cycle points toward PCOS. Not diagnostic alone but a strong supporting signal.
6. Pelvic ultrasound (transvaginal or abdominal)
Looks for the characteristic 'string of pearls' ovarian morphology (12+ small follicles). Rotterdam criteria need 2 of 3: irregular cycles + androgen excess + ultrasound morphology.
7. AMH (anti-Müllerian hormone)
Very high AMH (>4.5) is common in PCOS. Useful for confirming, and for fertility planning.
Common non-PCOS causes worth ruling out
- Hypothyroidism TSH > 4 with fatigue, cold hands, constipation. Easy to treat.
- High prolactin often stress, sometimes a pituitary adenoma. Milky discharge is a red flag.
- Functional hypothalamic amenorrhoea from under-eating, over-training or extreme stress. Cycles return when energy availability rises.
- Post-pill amenorrhoea cycles can take 6+ months to normalise after stopping the pill. Not always PCOS.
- Premature ovarian insufficiency hot flashes and missed periods before 40. Needs an FSH + estradiol test.
If the checklist points to PCOS
The evidence-based first-line stack is 40:1 myo:D-chiro-inositol + strength training + protein-forward meals. Add berberine and active folate for insulin-resistant PCOS, and vitamin D3 to sufficiency. Cycles typically start regularising in 3-6 months. Read the deep-dive linked below.
Ova Balance, the first-line stack in one daily sachet
If your workup points to PCOS, Ova Balance combines the exact first-line ingredients: 40:1 myo:D-chiro-inositol, berberine HCl and Quatrefolic® L-5-MTHF at research-backed doses.
The formulation behind this article
Ova Balance
40:1 Myo:D-Chiro inositol with Berberine HCl & Quatrefolic®
Myo-Inositol
2000 mgForm used: Pharmaceutical-grade myo-inositol powder, dosed in a 40:1 ratio with D-chiro inositol
Restores insulin signalling, ovulation and cycle regularity, backed by the research-backed 40:1 Myo:D-Chiro ratio.
D-Chiro Inositol
50 mgForm used: D-chiro inositol, dosed at 50 mg to hold the 40:1 ratio with myo-inositol
The original PCOS breakthrough, improves insulin sensitivity, androgen balance and ovulation when paired with myo-inositol in the 40:1 ratio.
Quatrefolic® (L-5-MTHF)
400 mcgForm used: Quatrefolic® (6S)-5-MTHF glucosamine salt, 400 mcg DFE
Patented (6S)-5-methyltetrahydrofolate glucosamine salt, the active, body-ready form of folate. Bypasses the MTHFR conversion step, so it works for everyone (including the ~30-50% with C677T variants). Delivered at 400 mcg DFE per sachet.
Berberine HCl
300 mgForm used: Berberine hydrochloride (HCl), 300 mg
Plant alkaloid that helps support insulin sensitivity, lipid balance and metabolic health, delivered at the 300 mg dose used in published PCOS and metabolic trials.
Food supplement, not a medicine. Ingredient research describes individual actives and their delivery forms, not finished-product outcomes. Consult a clinician if pregnant, lactating or on prescription medication.
References
Every in-text claim in this article is credited to the original researchers and peer-reviewed journal below. Key studies cited: Unfer V et al. (2017, Endocrine Connections); Facchinetti F et al. (2015, European Journal of Obstetrics & Gynecology and Reproductive Biology).
- [1]
Myo-inositol effects in women with PCOS: a meta-analysis of randomized controlled trials
- Author(s)
- Unfer V, Facchinetti F, Orrù B, Giordani B, Nestler J
- Year
- 2017
- Journal
- Endocrine Connections
- Citation
- Unfer V, Facchinetti F, Orrù B, Giordani B, Nestler J. Myo-inositol effects in women with PCOS: a meta-analysis of randomized controlled trials. Endocr Connect. 2017;6(8):647-658.
- PubMed
- https://pubmed.ncbi.nlm.nih.gov/29042448/
- [2]
Results from the International Consensus Conference on myo-inositol and d-chiro-inositol in obstetrics and gynecology
- Author(s)
- Facchinetti F, Bizzarri M, Benvenga S, D'Anna R, Lanzone A, Soulage C, et al.
- Year
- 2015
- Journal
- European Journal of Obstetrics & Gynecology and Reproductive Biology
- Citation
- Facchinetti F, Bizzarri M, Benvenga S, et al. Results from the International Consensus Conference on myo-inositol and d-chiro-inositol in obstetrics and gynecology. Eur J Obstet Gynecol Reprod Biol. 2015;195:72-76.
- PubMed
- https://pubmed.ncbi.nlm.nih.gov/26479442/
Citations follow AMA format. TruWe does not own or endorse the linked journals; all rights and credit remain with the original authors and their respective publishers.
Educational only. This checklist is a starting point, a full diagnosis and treatment plan should come from your gynaecologist or endocrinologist.