IGF-1

Collection Requirements

Source: blood
Container(s):

Preferred: Lithium heparin mint green gel
Acceptable: Red or Red gel

Volume: 1 mL in vacutainer or 400 uL in microtainer

Turn Around Time

2-3 hours

Availability

Routine

Lab Processing Instructions

Specimen: plasma or serum

Adele Hall: Spin, separate, and freeze if testing will not be completed within 24 hours of processing

Offsites: Spin, separate, and freeze

Performing Laboratory

Adele Hall

Adele Hall Lab Section

Chemistry

Instrumentation/Methodology

Immulite

Reference Ranges

Age (Years)	Male (ng/mL)	Female (ng/mL)
0-3	<15 - 189	<15 - 272
4-6	47 - 231	55 - 248
7-9	55 - 222	80 - 233
10-11	95 - 315	96 - 545
12-13	95 - 460	147 - 549
14-15	211 - 512	208 - 444
16-18	57 - 426	176 - 429
>18	85 - 374	85 - 374

MALE

Tanner Stage	Median	Range (ng/mL)
I	144	53 - 256
II	240	96 - 462
III	298	197 - 533
IV	290	165 - 476
V	257	159 - 537

FEMALE

Tanner Stage	Medium	Reference Range (ng/mL)
I	186	44 - 472
II	288	116 - 449
III	329	182 - 481
IV	319	186 - 461
V	274	146 - 431

CPT

84305