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Test Code IGF1 Insulin-like Growth Factor 1

Laboratory Code

LAB3005

Specimen Requirements

Specimen Type: Serum
Container/Tube: Gold Top (SSTII) 
Volume: 5.0 mL 
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs.

For non-inhouse specimen, please aliquot into secondary tube and send frozen to laboratory.

Specimen Stability

Specimen Type Serum
Ambient 24 hours
Refrigerate 48 hours
Frozen 28 days

Methodology

Electrochemiluminescent Immunoassay

Days and Times Performed

Monday through Friday, TAT 1-4 days

Specimen Condition

Gross Haemolysis Alert/Reject
Icterus OK
Lipaemia OK
Others Not applicable

Reference Interval

Age  Male (ug/L) Female (ug/L)
 < 1 yr  18 – 156 14 – 192
1 yr  14 – 203 23 – 243
2 yrs 16 – 222 28 – 256
3 yrs 22 – 229 31 – 249
4 yrs  30 – 236 33 – 237
5 yrs 39 – 250  36 – 234
6 yrs 47 – 275 39 – 246
7 yrs 54 – 312 44 – 279
8 yrs  61 – 356   51 – 334
9 yrs 67 – 405 61 – 408
10 yrs 73 – 456 73 – 495
11 yrs 79 – 506 88 – 585
12 yrs 84 – 551  104 – 665
13 yrs 90 – 589  120 – 719
14 yrs 95 – 618  136 – 729
15 yrs 99 – 633  147 – 691
16 yrs  104 – 633  153 – 611
17 yrs 107 – 615 149 – 509
18 yrs 132 – 476 156 – 466
19 yrs 134 – 450 155 – 449
20 yrs 136 – 421 152 – 429
21 yrs 137 – 394 148 – 410
22 yrs 137 – 370 143 – 392
23 yrs 136 – 348 138 – 375
24 yrs 135 – 328 134 – 359
25 yrs 132 – 310 130 – 343
26 yrs 130 – 295 126 – 329
27 yrs 128 – 282 122 – 315
28 yrs 125 – 271 118 – 303
29 yrs 123 – 263 115 – 292
30 yrs 120 – 257 112 – 281
31 yrs 118 – 253 109 – 271
32 yrs 116 – 250 107 – 263
33 yrs 114 – 247 104 – 255
34 yrs 111 – 244 102 – 248
35 yrs 109 – 242 100 – 242
36 yrs 107 – 239 98 – 238
37 yrs 105 – 236 97 – 234
38 yrs 103 – 234 95 – 231
39 yrs 101 – 231 93 – 228
40 yrs 99 – 229 91 – 227
41 yrs 96 – 226 90 – 225
42 yrs 94 – 223 88 – 224
43 yrs 92 – 221 87 – 222
44 yrs 91 – 218 85 – 221
45 yrs 89 – 216 83 – 220
46  yrs 87 – 214 82 – 219
47 yrs 85 – 211 80 – 218
48 yrs 83 – 209 79 – 218
49 yrs 81 – 207 77 – 217
50 yrs 79 – 205 76 – 215
51 yrs 77 – 203 74 – 214
52 yrs 75 – 201 73 – 212
53 yrs 73 – 200 71 – 210
54 yrs 71 – 198 70 – 207
55 yrs 69 – 196 69 – 204
56 yrs 67 – 195 67 – 201
57 yrs 65 – 194 66 – 198
58 yrs 64 – 193 65 – 194
59 yrs 62 – 192 63 – 190
60 yrs 61 – 191 62 – 186
61 yrs 60 – 190 61 – 182
62 yrs 59 – 189 60 – 179
63 yrs 59 – 188 58 – 176
64 yrs 58 – 188 57 – 173
65 yrs 57 – 187 56 – 170
66 yrs 57 – 186 56 – 168
67 yrs 56 – 186 55 – 166
68 yrs 56 – 186 54 – 164
69 yrs 55 – 185 54 – 163
70 yrs 55 – 185 54 – 162
71 yrs 54 – 184 53 – 161
72 yrs 54 – 184 53 – 160
73 yrs 53 – 184 53 – 160
74 yrs 52 – 184 53 – 160
75 yrs 52 – 184 54 – 160
76 yrs 51 – 184 54 – 161
77 yrs 51 – 184 54 – 162
≥ 78 yrs 50 – 184 –
78 yrs – 54 – 163
79 yrs – 55 – 164
≥ 80 yrs – 55 – 166

Testing Laboratory

National University Hospital
Clinical Chemistry, 67724346

Useful For

Diagnosis of human growth hormone excess and deficiency disorders.

Service Code

31891

LOINC Code Information

2484-4

Alias

Insulin-like Growth Factor Binding

Somatomedin C

Update

Last updated 18/07/2025