Specimen Serum Units iu/L Reference Range Female Follicular phase 3.5 – 12.5 iu/L Mid-cycle peak 4.7 – 22.0 iu/L Menopausal 25.0 – 135.0 iu/L Male 1.5 – 12.4 iu/L Test Usage Specimens are ideally collected during the Follicular phase except when timing ovulation. Release of both hormones is episodic and can lead to biological variation throughout the day. In […]
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