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Also reported in: IU/L
Your LH is within the normal follicular phase reference range. This is a reassuring fertility result.
Your LH is very low. LH is essential for triggering ovulation (the LH surge) and maintaining the corpus luteum after ovulation. Very low LH indicates hypothalamic or pituitary dysfunction, preventing normal ovulation and corpus luteum function.
Seek urgent endocrinology or reproductive endocrinology evaluation. Pituitary MRI, comprehensive hormone panel, and nutritional assessment are needed.
LH very low — pituitary insufficiency; ovulation unlikely without interventionYour LH is below the reference range. Low LH in the follicular phase can indicate hypothalamic suppression, hypopituitarism, or hormonal suppression from medications. Without adequate LH, ovulation and corpus luteum function are impaired.
Discuss with your doctor. Comprehensive hormonal evaluation and cycle tracking to confirm this ovulation are recommended.
LH below reference range — reduced pituitary signaling; possible anovulationYour LH is at the lower end of normal. This may be normal for some individuals or may reflect mild hypothalamic suppression.
No urgent action in isolation. Monitor cycle regularity and discuss with your doctor if concerns persist.
LH: low-normal — adequate but borderline pituitary LH outputYour LH is within the normal follicular phase reference range. This is a reassuring fertility result.
No specific action required.
LH within normal range for follicular phase — normal pituitary signalingYour LH is in the optimal follicular phase range, indicating excellent pituitary-ovarian signaling.
No action needed.
LH in optimal follicular phase range — excellent reproductive signalingYour LH is above the reference range for the follicular phase. This may represent a sample taken at midcycle during the normal LH surge (ovulation trigger), or it may indicate a chronically elevated LH:FSH ratio, which is a characteristic feature of PCOS. An LH:FSH ratio above 2:1 is associated with PCOS.
Clarify timing of sample collection. If taken on day 2–5, an elevated LH:FSH ratio warrants PCOS evaluation with ultrasound and androgen testing.
LH above reference range — possible PCOS pattern (elevated LH:FSH ratio) or midcycle sampleYour LH is noticeably elevated in the follicular phase. This pattern is characteristic of PCOS (high LH:FSH ratio causing anovulation and androgen excess) or, in the presence of high FSH, primary ovarian insufficiency.
Seek reproductive endocrinology evaluation. PCOS or ovarian failure assessment should be completed with ultrasound, male-type hormones (androgens), FSH, and AMH testing.
LH noticeably elevated — PCOS highly suspected or primary ovarian insufficiencyYour LH is very high. In a reproductive-age woman outside of the midcycle surge, very high LH combined with high FSH indicates primary ovarian insufficiency or premature menopause. This requires urgent specialist evaluation.
Seek urgent reproductive endocrinology evaluation. Repeat testing, AMH, and comprehensive assessment are needed. Hormone replacement and fertility counseling should be arranged.
LH very high — primary ovarian insufficiency (with high FSH) or menopausal rangeUpload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.