Insulin-Like Growth Factor I
Label Mnemonic: IGFI
Epic Lab Code: LAB3430
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Serum
Collection Medium:
Red top tube 5 mL (Clot Activator)
Minimum:
Preferred Minimum: 1 mL serum from red top tube
Absolute Minimum: 0.5 mL serum from red top tube
Rejection Criteria:
Plasma, tissue or urine. Grossly hemolyzed or lipemic specimens.
Delivery Instructions:
Deliver to laboratory immediately after collection.
Turn Around Time:
1-2 days upon receipt at reference laboratory
Reference Range:
Reference Interval (ng/mL) AGE MALE FEMALE AGE MALE FEMALE 0 year 11-100 8-131 43 years 78-233 71-258 1 year 12-120 9-146 44 years 76-230 69-253 2 years 13-143 11-165 45 years 74-227 66-249 3 years 14-169 13-187 46 years 72-225 64-246 4 years 15-200 15-216 47 years 71-224 62-243 5 years 16-233 19-251 48 years 69-224 60-240 6 years 17-269 24-293 49 years 68-225 59-238 7 years 18-307 30-342 50 years 67-225 57-236 8 years 20-347 39-396 51 years 66-225 55-235 9 years 23-386 49-451 52 years 65-222 53-234 10 years 29-424 62-504 53 years 64-218 52-233 11 years 37-459 76-549 54 years 62-214 51-233 12 years 49-487 90-581 55 years 61-210 49-234 13years 64-508 104-596 56 years 59-206 48-235 14 years 83-519 115-591 57 years 58-204 47-236 15 years 102-520 121-564 58 years 56-203 46-238 16 years 119-511 122-524 59 years 55-203 44-240 17 years 131-490 120-479 60 years 53-206 43-241 18 years 137-461 117-436 61 years 51-209 41-243 19 years 137-428 113-399 62 years 49-214 40-244 20 years 133-395 109-372 63 years 46-219 38-244 21 years 127-364 107-351 64 years 43-225 36-244 22 years 120-338 105-337 65 years 40-231 34-241 23 years 112-316 103-326 66 years 37-236 32-238 24 years 105-298 102-317 67 years 34-240 30-235 25 years 99-283 100-311 68 years 31-243 28-231 26 years 94-271 98-305 69 years 29-245 27-228 27 years 90-262 96-301 70 years 27-246 26-226 28 years 87-255 93-297 71 years 26-245 24-224 29 years 84-250 91-293 72 years 25-242 24-222 30 years 83-246 89-290 73 years 24-236 23-221 31 years 82-244 87-286 74 years 23-229 22-220 32 years 82-243 85-283 75 years 22-221 21-218 33 years 82-242 83-280 76 years 22-212 20-216 34 years 82-242 82-279 77 years 21-204 20-214 35 years 83-241 81-278 78 years 20-196 19-210 36 years 83-240 80-277 79 years 19-189 18-206 37 years 83-239 80-277 80 years 18-184 18-200 38 years 83-238 79-276 81 years 17-180 18-193 39 years 83-238 78-274 82 years 16-177 17-186 40 years 82-237 76-271 83 years 16-176 17-179 41 years 81-236 75-267 84 years 16-176 17-173 42 years 80-235 73-263 85 years 15-177 17- 167
Interpretive Data:
A Z score is the number of standard deviations a given result is above (positive score) or below (negative score) the age- and sex-adjusted population mean. Results that are within the IGF-1 reference interval will have a Z score between -2.0 and +2.0.

Note: Both patient age and sex are required for Z score calculation.
Methodology:
Quantitative Chemiluminescent Immunoassay
CPT Code:
84305