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Insulin - Like Growth Factor 1

Source Blood
Mnemonic IGF
Specimen Requirements

1 x 3.5 mL gold top SST tube, ONLY.

0.5 mL serum

Specimen Handling PSC & RRL :
Centrifuge, pour off and DSC will freeze samples upon arrival.

Extra-regional:
Centrifuge, pour off and freeze serum, transport to DSC.
Additional Information  
Testing Location Immunochemistry
Testing Frequency Once weekly
Alternate Name(s) Somatomedin-C, IGF, IGF-1
Reference Interval
Reference ranges assigned by age   UG/L
 <1 year  not established
  1 year   55-327
  2 years   51-303
  3 years   49-289
  4 years   49-283
  5 years   50-286
  6 years   52-297
  7 years   57-316
  8 years   64-345
  9 years   74-388
 10 years   88-452
 11 years  111-551
 12 years  143-693
 13 years  183-850
 14 years  220-972
 15 years  237-996
 16 years  226-903
 17 years  193-731
 18 years  163-584
 19 years  141-483
 20 years  127-424
 21-25 years  116-358
 26-30 years  117-329
 31-35 years  115-307
 36-40 years  109-284
 41-45 years  101-267
 46-50 years    94-252
 51-55 years    87-238
 56-60 years    81-225
 61-65 years    75-212
 66-70 years    69-200
 71-75 years    64-188
 76-80 years    59-177
 81 years and over    55-166