Insulin-like growth factor-1 (IGF-1) with Z-score

Alphabetical Test listing

Insulin-like growth factor-1 (IGF-1) with Z-score-13348

  
Insulin-like growth factor-1 (IGF-1) with Z-score
  
13348
  
LAB13348
  
IFG1
  
IGF-1
  

Results of the insulin-like growth factor-1 assay are to be used in conjunction with other clinical and laboratory data to assist the clinician in the assessment of growth disorders.

  

This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H, or coenzyme R).

It is recommended to ask all patients who may be indicated for this test about biotin supplementation. Patients should be cautioned to stop biotin consumption at least 72 hours prior to the collection of a sample.

  
Serum
  
  
0.5 mL
  
0.3 mL
Submitting the minimum volume does not allow for repeat testing
  

Spin

  

Gold serum separator (SST) tube

  
  

Spin and separate

  
  

Refrigerated (preferred) - 7 days

Ambient - 3 days

Frozen - 14 days

Freeze/thaw cycles - stable x 3

  
LabCorp Burlington (010540): R-LC
  
Daily
  
1 - 3 days
  

Immunochemiluminometric assay (ICMA)

  

78 - 270 ng/mL

  
Biotin supplement interference - see patient preparation
  
84305
  
Result 2484-4
  
05/22/2019
  
03/30/2021
  
03/02/2021