Test Overview
Test Methodology

Chemiluminescent Enzyme Immunoassay

Test Usage

Adjunct to the assessment of Growth Hormone secretion.

Reference Range *

IGF-1 Reference Range May 1, 2017

Age (years) IGF-1 Reference Range (ng/mL)
1 -2 30 – 200
3 – 5 40 – 200
6 – 7 45 – 215
8 55 – 235
9 60 – 265
10 70 – 305
11 85 – 380
12 105 – 460
13 130 – 570
14 150 – 640
15 160 – 640
16 155 – 610
17 140 – 530
18 120 – 440
19 105 – 410
20 95 – 380
21 – 25 85 – 350
26 – 30 85 – 310
31 – 35 70 – 280
36 - 40 68 – 220
41 – 45 65 – 200
46 – 50 65 – 195
51 – 55 60 – 180
56 – 60 60 – 170
61 – 65 58 – 170
66 – 70 55 – 165
>=71 50 – 160

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Wednesday
Analytic Time

8 hours

Soft Order Code
IGF1
MiChart Code
Insulin-Like Growth Factor (IGF-1)
Synonyms
  • IGF-1
  • Somatomedin C
  • Cytokine IGF-1
Laboratory
Chemical Pathology
Section
Special Chemistry
Specimen Requirements
Collection Instructions

Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and freeze within 1 hour.

Normal Volume

0.5 mL serum

Minimum Volume

0.5 mL serum

Billing
CPT Code
84305
Fee Code
32036
LOINC
2484-4
NY State Approved
No