ACTH, morning — lab reference
Your clinician may request a morning sample, collected and handled in a particular way, alongside a cortisol test.
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What’s searchable?IGF-1 — lab reference
Age, sex, nutrition, liver disease, diabetes, and assay matter.
Growth hormone, random — lab reference
Pulsatile secretion makes random GH difficult to interpret; stimulation/suppression testing may be needed.
Parathyroid hormone (intact PTH) — lab reference
Ask your clinician to read this result with calcium, phosphorus, magnesium, vitamin D, and kidney function.
Aldosterone — lab reference
Sodium intake, posture, potassium, time, medications, and renin method are essential.
Renin / plasma renin activity — lab reference
Direct renin and plasma renin activity are not interchangeable.
Aldosterone-renin ratio — lab reference
Screening cutoff depends on units, method, medications, potassium, and collection protocol.
Plasma free metanephrines — lab reference
How you sit or lie down for the sample, and stress during collection, can affect this result. Use the cutoff from the lab that ran your test.
Reduced glutathione (GSH) — lab reference
Ask your clinician to specify whole blood, RBC, plasma, or intracellular method. Preanalytic handling is critical.
Oxidized glutathione (GSSG) — lab reference
The test method and how the sample is protected after collection can affect this number.
GSH/GSSG ratio — lab reference
This ratio is useful only when both measurements were made using a reliable paired method.
Superoxide dismutase activity — lab reference
RBC, plasma, and cellular assays are not interchangeable.
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