Test Directory

Insulin-Like Growth Factor-1, LC-MS, Serum

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Updated Test Information:

Test Description
Insulin-Like Growth Factor-1, LC-MS, Serum
Synonym(s)
IGF-1, LC/MS
Test ID
IGFMS
General Information
Useful for:
Evaluation of growth disorders
Evaluation of growth hormone deficiency or excess in children and adults
Monitoring of recombinant human growth hormone treatment
Follow-up of individuals with acromegaly and gigantism
Specimen Type
Serum
Specimen Requirements
Red Top
Stability
Frozen (preferred) 28 days
Ambient 72 hours
Refrigerated 72 hours
Unacceptable Specimen Conditions
Gross hemolysis Reject
Gross lipemia OK
Gross icterus OK
Methodology
Liquid Chromatography-Mass Spectrometry (LC/MS)
Estimated TAT
2-3 days
Testing Schedule
Monday-Friday
CPT Code(s)
84305
Minimum Sample Volume
0.3 mL
Reference Range

Males:
0-11 months: 18-156 ng/mL
1 year: 14-203 ng/mL
2 years: 16-222 ng/mL
3 years: 22-229 ng/mL
4 years: 30-236 ng/mL
5 years: 39-250 ng/mL
6 years: 47-275 ng/mL
7 years: 54-312 ng/mL
8 years: 61-356 ng/mL
9 years: 67-405 ng/mL
10 years: 73-456 ng/mL
11 years: 79-506 ng/mL
12 years: 84-551 ng/mL
13 years: 90-589 ng/mL
14 years: 95-618 ng/mL
15 years: 99-633 ng/mL
16 years: 104-633 ng/mL
17 years: 107-615 ng/mL
18-22 years: 91-442 ng/mL
23-25 years: 66-346 ng/mL
26-30 years: 60-329 ng/mL
31-35 years: 54-310 ng/mL
36-40 years: 48-292 ng/mL
41-45 years: 44-275 ng/mL
46-50 years: 40-259 ng/mL
51-55 years: 37-245 ng/mL
56-60 years: 34-232 ng/mL
61-65 years: 33-220 ng/mL
66-70 years: 32-209 ng/mL
71-75 years: 32-200 ng/mL
76-80 years: 33-192 ng/mL
81-85 years: 33-185 ng/mL
86-90 years: 33-179 ng/mL
> or =91 years: 32-173 ng/mL

Females:
0-11 months: 14-192 ng/mL
1 year: 23-243 ng/mL
2 years: 28-256 ng/mL
3 years: 31-249 ng/mL
4 years: 33-237 ng/mL
5 years: 36-234 ng/mL
6 years: 39-246 ng/mL
7 years: 44-279 ng/mL
8 years: 51-334 ng/mL
9 years: 61-408 ng/mL
10 years: 73-495 ng/mL
11 years: 88-585 ng/mL
12 years: 104-665 ng/mL
13 years: 120-719 ng/mL
14 years: 136-729 ng/mL
15 years: 147-691 ng/mL
16 years: 153-611 ng/mL
17 years: 149-509 ng/mL
18-22 years: 85-370 ng/mL
23-25 years: 73-320 ng/mL
26-30 years: 66-303 ng/mL
31-35 years: 59-279 ng/mL
36-40 years: 54-258 ng/mL
41-45 years: 49-240 ng/mL
46-50 years: 44-227 ng/mL
51-55 years: 40-217 ng/mL
56-60 years: 37-208 ng/mL
61-65 years: 35-201 ng/mL
66-70 years: 34-194 ng/mL
71-75 years: 34-187 ng/mL
76-80 years: 34-182 ng/mL
81-85 years: 34-177 ng/mL
86-90 years: 33-175 ng/mL 
> or =91 years: 25-179 ng/mL

Tanner Stage reference ranges:

Males
Stage I 81-255 ng/mL
Stage II 106-432 ng/mL
Stage III 245-511 ng/mL
Stage IV 223-578 ng/mL
Stage V 227-518 ng/mL
Females
Stage I 86-323 ng/mL
Stage II 118-451 ng/mL
Stage III 258-529 ng/mL
Stage IV 224-586 ng/mL
Stage V 188-512 ng/mL

 

Performing Lab
Mayo
LOINC Code(s)
2484-4, 73561-3