Sign in →

Test Code LAB526 Insulin-Like Growth Factor 1 (IGF 1)

Clinical System Name

Insulin-Like Growth Factor 1 (IGF 1)

Synonyms

Somatomedin-C

IGF-1

Sample Requirements

Specimen: Whole blood

Container(s): Gold, Gold Microtainer, Red Top-Plain, Lt. Green/Lithium Heparin, Dark Green/Sodium Heparin

Preferred Vol: 1 mL

Minimum Vol: 1 mL

 

Note:

 

Processing Instructions

Reject due to: Gross hemolysis or lipemia

Spin: Y

Aliquot: Y

Temp: -20 C

Storage location: Transfer 0.5 mL serum/plasma to plastic aliquot container affixed with larger Cerner label. Freeze in CPA Freezer, Fz2 rack

 

Off-site collection: Spin blood, transfer 0.5 mL serum to plastic aliquot container. Freeze specimen.

Stability

Specimen Type Temperature Time
serum/plasma Room temp 24 h
  Refrigerated 7 d
  Frozen 12 m

 

Availability

STAT Performed TAT
N T, Th 2 - 6 d

 

Performing Laboratory

Seattle Children's Laboratory    

 

Department

Department:  Chemistry

Location: Chem East

Phone Number: (206) 987-2617

 

 

 

CPT Codes

84305

Methodology

Method: Chemiluminescent Immunoassay by Immunodiagnostics iSYS

Analytical Volume: 250 mcL serum or plasma

Limitations:

Reference Range

 

Age (years) Males (ng/mL) Females (ng/mL)
birth up to 1 yr 27-157 18 - 126
1 30 - 167 20 - 132
2 30 - 184 22 - 145
3 39 - 205 26 - 164
4 44 - 225

31- 188
5 50 - 246 36 - 214
6 56 - 267 42 - 240
7 63 - 292 49 - 270
8 72 - 323 57 - 305
9 84 - 362 67 - 349
10 97 - 407 80 - 400
11 112 - 454 93 - 453
12 126 - 499 105 - 499
13 139 - 533 116 - 533
14 148 - 551 123 - 552
15 152 - 553 127 - 554
16 153 - 542 128 - 542
17 151 - 521 125 - 517
18 146 - 494 121 - 486
19 140 - 463 114 - 451
20 133 - 430 108 - 416
21 - 24 115 - 355 93 - 342
25 - 150 86 - 280 70 - 270
     
Tanner Stages Males Females
Stage I 81 - 255 86 - 323
Stage II 106 - 432 118 - 451
Stage III 245 - 511 258 - 529
Stage IV 223 - 577 224 - 586
Stage V 227 -  518 188 - 512