Lab ranges
10 entries
ACTH, morning — lab reference
Your clinician may request a morning sample, collected and handled in a particular way, alongside a cortisol test.
Aldosterone — lab reference
Sodium intake, posture, potassium, time, medications, and renin method are essential.
Aldosterone-renin ratio — lab reference
Screening cutoff depends on units, method, medications, potassium, and collection protocol.
Cortisol, serum, afternoon/evening — lab reference
Time-specific and assay-specific.
Cortisol, serum, morning — lab reference
Collect at a defined time. Assay-specific; dynamic testing may be required.
Growth hormone, random — lab reference
Pulsatile secretion makes random GH difficult to interpret; stimulation/suppression testing may be needed.
IGF-1 — lab reference
Age, sex, nutrition, liver disease, diabetes, and assay matter.
Parathyroid hormone (intact PTH) — lab reference
Ask your clinician to read this result with calcium, phosphorus, magnesium, vitamin D, and kidney function.
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.
Renin / plasma renin activity — lab reference
Direct renin and plasma renin activity are not interchangeable.
About these ranges
These are Dr. Purser’s adult reference ranges. Units, symptoms and health history matter when you discuss a result with your clinician.
