Additional Information:
EPIC Test Name: INSULIN-LIKE GROWTH FACTOR-1
0 decimal points (e.g., 97 ng/mL)
CPT Code(s):
84305
Collection Procedure:
Collect specimen in SST tube. Allow to clot. Centrifuge and store refrigerated. Transport to lab.
Specimen Requirements:
Specimen Type: Serum (preferred) or Plasma Container/Tube: SST or Lithium Heparin (Green top) Sample Volume: 1 mL Minimum Volume: 0.2 mL (Repeat testing is not possible with this specimen volume.) Storage: Refrigerate Stability (collection to time of analysis/testing):
Refrigerated: 24 hours Frozen: 12 months
Methodology:
Solid-phase enzyme-labeled chemiluminescent immunometric assay
Reported:
1-3 Business Days
Reference Values:
Normal Range Reference Intervals for IGF-1
Females
Age (Years) ng/mL
Age (Years)
ng/mL
0 – 4 18.2 – 172 40 – 45 58.2 – 219
4 – 7 35.4 – 232 45 – 50 53.3 – 215
7 – 10 56.9 – 277 50 – 55 48.1 – 209
10 – 12 118 – 448 55 – 60 44.7 – 210
12 – 14 170 – 527 60 – 65 43 – 220
14 – 16 191 – 496 65 – 70 40.2 – 225
16 – 19 190 – 429 70 – 80 35.1 – 216
19 – 22 117 – 232 80 – 90 30.6 – 208
22 – 25 98.7 – 289
25 – 30 83.6 – 259
30 – 35 71.2 – 234
35 – 40 63.4 – 223
Males
Age (Years) ng/mL Age (Years) ng/mL
0 – 4 0 – 129 40 – 45 58.2 – 219
4 – 7 22 – 208 45 – 50 53.3 – 215
7 – 10 40.1 – 255 50 – 55 48.1 – 209
10 – 12 68.7 – 316 55 – 60 44.7 – 210
12 – 14 143 – 506 60 – 65 43 – 220
14 – 16 177 – 507 65 – 70 40.2 – 225
16 – 19 173 – 414 70 – 80 35.1 – 216
19 – 22 117 – 232 80 – 90 30.6 – 208
22 – 25 98.7 – 289
25 – 30 83.6 – 259
30 – 35 71.2 – 234
35 – 40 63.4 – 223
Tanner Stages (from Emlinger)
Tanner Stage Females Males I 49- 342 ng/mL 63- 279 ng/mL II 115- 428 ng/mL 75- 420 ng/mL III 145- 760 ng/mL 94 – 765 ng/mL