Parathyroid hormone (intact PTH) — lab reference
In the reference guideAsk your clinician to read this result with calcium, phosphorus, magnesium, vitamin D, and kidney function.
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What’s searchable?Ask your clinician to read this result with calcium, phosphorus, magnesium, vitamin D, and kidney function.
Estrogen, thyroid, liver disease, insulin resistance, age, and medications affect SHBG.
Ask your clinician to read this result with testosterone or estradiol, FSH, cycle phase, and pituitary context.
Ask your clinician to read this result with age, ovarian status, testosterone/estradiol, and pituitary context.
Ovarian reserve marker, not egg quality. PCOS and hormonal treatments may affect interpretation.
Pulsatile secretion makes random GH difficult to interpret; stimulation/suppression testing may be needed.
Binding abnormalities and severe illness may affect some free-hormone assays.
Exogenous hormone use changes interpretation.
Wide range; hormone therapy may suppress.
Hormone therapy may suppress.
Morning collection preferred for men. Method and age matter; confirm unexpected low values.
Mayo example age 20-24: M 5.25-20.7; F <0.13-1.08. Declines with age and is method-dependent.
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