How accurate are ovulation predictor kits?
LH kits show a smiley on day 16 but my cycles are 32 to 35 days. We timed intercourse and still no pregnancy after 8 months. Are kits enough?
Short answer: LH kits detect the surge before ovulation for many people but can mis-time long or PCOS cycles and cannot confirm egg release. After months of trying, a basic fertility evaluation is more useful than more kit purchases alone.
Answer #1
What kits can and cannot do
Most kits detect LH rise, which usually precedes ovulation by about 24 to 36 hours. They do not prove an egg was released, fertilised or implanted. False surges can occur with some fertility medicines and in PCOS with chronically elevated LH.
Dr. Priya Deshmukh, MD, FRM Fertility Specialist. Answered 2026-07-13
Answer #2
Next step after months of kits
At eight months of trying with longer cycles, ask for ovulation confirmation by ultrasound or mid-luteal progesterone, plus semen analysis. If ovulation is inconsistent, supervised induction is more efficient than another year of kit-based timing.
Dr. Arjun Reddy, MS (OBG), Reproductive Endocrinologist. Answered 2026-07-13
Call your clinic or go to the hospital the same day if you have
- None from kits alone
- Seek care for severe pelvic pain or abnormal bleeding
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Answers are general education for patients in India, not a diagnosis or personal medical advice. Best IVF Centers is a fertility matching service, not a clinic or hospital. Always follow your treating doctor's instructions. In an emergency, go to the nearest hospital.