Insulin - Like Growth Factor 1
| Source |
Blood |
| Mnemonic |
IGF |
| Specimen Requirements |
1 x 5 mL gold top SST tube, ONLY.
0.5 mL serum
Minimum Blood Volume for Patients less than 45 kg (100 lb) Including Neonates and Pediatrics |
| Specimen Handling |
Separate from clot within 1 hour.
PSC: Centrifuge, pour off and DSC will freeze samples upon arrival.
RRL & extra-regional: Centrifuge, pour off and freeze serum, transport to DSC. |
| Additional Information |
|
| Testing Location |
RIA |
|
| 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 |
|
|
