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Insulin-Like Growth Factor 1
Abbreviation: IGF-1
Panel: Hormone Tests · All hormones tests
Typical adult reference range
| Conventional units | 100–300 ng/mL |
| SI units | 100–300 ng/mL |
Ranges vary between laboratories and methods — compare your result with the range printed on your own report.
What a high or low result can mean
High insulin-like growth factor 1: high values can be seen in acromegaly.
Low insulin-like growth factor 1: low values may occur in growth hormone deficiency, malnutrition, and liver disease.
These are associations, not a diagnosis: the same result can have several causes, and your clinician interprets it with the rest of your results and history.
Good to know
Ranges are strongly age- and sex-dependent; the values shown are a general adult guide and laboratories report age-adjusted ranges.
Related tests — Hormone Tests
Please note: Reference ranges vary between laboratories, and between the methods and instruments they use — the range printed on your own report is the one your result should be compared with. A result outside the range is not by itself a diagnosis, and a result inside it does not rule out illness. These pages are an educational summary, not medical advice: always discuss your results with the clinician who ordered them, who can interpret them in the context of your health and history.