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Test Code: IGFI Preferred Name IGF I

Results Avail After Hours:No

Urgent:N/A

Test Frequency:Once / week

Routine:1 week

MBS Status:Medicare Item

Min. Re-Test Interval:N/A

Public price:

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Test Tubes

Specimen Type	Specimen Volume	Tube Type
Blood (adult)	4 mL	SST with gel 8.5 mL (Dark Yellow Top)
Blood (paediatric)	1 mL	2x SST with gel 600 uL Paed (Red or Yellow top)
Blood (neonatal)	1 mL	2x SST with gel 600 uL Paed (Red or Yellow top)

COLLECTION NOTES

GENERAL NOTES

APPLICATION: Diagnosis of acromegaly or gigantism. Diagnosis of Laron dwarfism. Assessment of growth hormone deficiency or nutritional status.

INTERPRETATION: Levels are increased in acromegaly, and the test is used in the initial assessment of patients, prior to a growth hormone suppression test. Its diagnostic value is limited at the time of puberty and in malnutrition and severe illness. In Laron dwarfism, a rare disease, growth hormone is not reduced but IGF-1 is reduced.