Skip to content

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Find out more here. Hide this message

Laboratory Medicine

Test Directory / Insulin-like Growth Factor 1

Insulin-like Growth Factor 1

Brown clotted serum, gel barrier or lithium heparin

TestInsulin-like Growth Factor 1
Common AbbreviationsIGF1
Tube typeBrown clotted serum, gel barrier or lithium heparin
Clinical IndicationInsulin-like growth factor 1 (IGF1) measurement is useful in the evaluation of growth disorders and in the diagnosis and monitoring of pituitary disease.
Specimen TypeBlood
Sample typeSerum or plasma
Minimum Volume0.5mL If requesting more than 10 biochemistry tests please send an additional sample specifically for IGF1.
Special PrecautionsNo special requirements
Stability 24 hours at 15 - 25°C, 48 hours at 2 - 8°C and 28 days at -20°C
Turnaround Time Inpatient: 7 days Outpatient/GP: 7 days
Reference IntervalPlease refer to reference ranges available:
LimitationsAnalysis should not be performed on haemolysed, icteric or lipaemic samples. The assay is unaffected by biotin (< 205 nmol/L or < 50 ng/mL) No interference was observed from rheumatoid factors up to a concentration of 1200 IU/mL. No interference was observed from IgG < or equal to 3.3 g/dL; IgA < or equal to 0.5 g/dL; IgM < or equal to 1.0 g/dL Samples should not be taken from patients receiving therapy with high biotin doses (i.e. > 5 mg/day) until at least 8 hours following the last biotin administration. In vitro tests were performed on 16 commonly used pharmaceuticals. No interference with the assay was found. In addition, special growth disorder drugs were tested. No interference was found. In rare cases, interference due to extremely high titres of antibodies to analyte specific antibodies, streptavidin or ruthenium can occur. These effects are minimized by suitable test design.
A receptionist at an information stand reading some paperwork

Your Visit

Two female receptionists on the phone at a desk smiling


Chinese Poland

View all languages >