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Test Code GF1SM Insulin-Like Growth Factor 1, Serum

Additional Codes

Epic EAP Mayo Code
LAB526 IGF1S


Necessary Information


Indicate patient's age and sex.



Specimen Required


Patient Preparation: For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 0.8 mL Serum

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Useful For

First-tier test for evaluation of growth disorders

 

Evaluation of growth hormone deficiency or excess in children and adults

 

Monitoring of recombinant human growth hormone treatment

 

Follow-up of individuals with acromegaly and gigantism

Method Name

Chemiluminescence Immunoassay

Reporting Name

Insulin-Like Growth Factor 1, S

Specimen Type

Serum

Specimen Minimum Volume

Serum: 0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Frozen (preferred) 90 days
  Ambient  7 days
  Refrigerated  7 days

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus Reject

Day(s) Performed

Monday through Friday

Report Available

1 to 3 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

84305

LOINC Code Information

Test ID Test Order Name Order LOINC Value
IGF1S Insulin-Like Growth Factor 1, S 2484-4

 

Result ID Test Result Name Result LOINC Value
IGF1C Insulin-Like Growth Factor 1, S 2484-4
IGF1Z Z-score 73561-3
IGFZ1 Z-score 73561-3