Polycystic Ovary Syndrome (PCOS) is one of the most common endocrine disorders among young Indian women, affecting roughly 1 in every 5 women of reproductive age. Yet countless women struggle in frustration: stubborn chin hair (hirsutism), painful cystic jawline acne, unexplainable belly fat, and menstrual cycles that arrive once every 45 to 60 days.
While an ultrasound of the pelvis can look for a "string of pearls" appearance of immature cysts, ultrasound alone cannot diagnose PCOS. The true biological driver lives in your pituitary hormones: specifically, the balance between Luteinizing Hormone (LH) and Follicle Stimulating Hormone (FSH).
The Normal Dance: LH and FSH in Harmony
In a healthy menstrual cycle:
- FSH (Follicle Stimulating Hormone) rises first. It tells your ovaries to mature a few follicles and pick the best egg.
- LH (Luteinizing Hormone) waits quietly in the background until mid-cycle (Day 14), when it surges rapidly to trigger the release of the mature egg (ovulation).
In a healthy woman tested on Day 2 or Day 3 of her period, the ratio of LH to FSH is approximately 1:1 (for example, LH is 5 mIU/mL and FSH is 5 mIU/mL).
What Happens in PCOS? The 2:1 or 3:1 Inversion
In women with PCOS, the pituitary gland continuously pumps out abnormally high levels of LH right from the start of the cycle. The ratio flips to 2:1 or even 3:1 (e.g., LH is 15 mIU/mL while FSH is only 5 mIU/mL)!
This high LH prevents the ovary from ever selecting a single dominant egg. Instead, dozens of small follicles stall halfway, forming fluid-filled sacs (cysts). Worse yet, excess LH stimulates the ovarian theca cells to overproduce male androgens (Testosterone), causing acne and unwanted hair growth.
| Parameter (Tested Day 2 or 3 of Period) | Normal Cycle | PCOS Pattern |
|---|---|---|
| LH to FSH Ratio | ~ 1:1 | 2:1 to 3:1 or higher |
| Total Testosterone | 15 – 70 ng/dL | Elevated (> 70 ng/dL) |
| AMH Level | 1.5 – 3.5 ng/mL | High (> 4.0 – 10+ ng/mL) |
Get complete clarity on your hormones. BookMyPatho offers comprehensive PCOS Blood Panels (LH, FSH, Total Testosterone, AMH, Fasting Insulin, TSH) with gentle doorstep sample collection in Delhi NCR.
Recommended Lab Tests & Packages to Book at Home
If you or a loved one are experiencing these symptoms, you can book these diagnostic tests directly with BookMyPatho. Our trained phlebotomists collect samples from your doorstep across Delhi NCR with digital reports delivered within 12 hours:
- LH & FSH Hormone Panel (Day 2/3): Calculates the 2:1 or 3:1 LH:FSH inversion characteristic of PCOS.
- AMH (Anti-Mullerian Hormone): Confirms multiple follicular cysts and elevated ovarian reserve.
- Total Testosterone & Fasting Insulin: Identifies hyperandrogenism and underlying insulin resistance in PCOS.
Have questions or need assistance selecting the right package? Call or WhatsApp our Delhi NCR health desk at +91-8700227153.
