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Growth Hormone

GH Somatotropin Human Growth Hormone (hGH)
Serum (SST) mIU/L or µg/L

About this test

Pulsatile secretion from anterior pituitary. Random levels are unhelpful; stimulation tests (insulin tolerance test, glucagon test) are used for deficiency, suppression tests (OGTT) for excess.

Reference Ranges

Sex Age Range Notes
All ≥ 18 yrs See notes Random level: no single reference range; clinical interpretation requires dynamic testing

Clinical Interpretation

Low / Decreased
Low — growth hormone deficiency (adult or paediatric); confirmed by stimulation test.
High / Increased
Elevated (failure to suppress on OGTT) — acromegaly. Physiological elevation during sleep, exercise, stress.

Related Tests

IGF-1 Prolactin
Specimen
Serum (SST)
Reporting Unit
mIU/L or µg/L
Category
⚗️ Endocrinology

⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.