IGF-1 (Insulin-like Growth Factor 1)

CPT: 84305
Hormones

What This Test Measures

Growth hormone surrogate marker; screens for GH deficiency and acromegaly; more stable than GH itself.

Preparation

No fasting required
Fasting preferred. Draw in the morning. Results can be affected by nutritional status — avoid dramatic changes to diet in the days before testing.

General guidelines only. Requirements vary by lab and individual. Confirm with your provider before adjusting any medications.

Turnaround Time

Varies by lab

Clinical Notes

More reliable than random GH measurement; preferred screening test for GH axis

ICD-10 Codes

Common diagnosis codes associated with this test. Codes are assigned by your provider.

E22.0Acromegaly and pituitary gigantism
E23.0Hypopituitarism
R62.50Unspecified lack of expected normal physiological development in childhood

Self-Pay Pricing

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Walk-In Lab

Uses both Quest and Labcorp networks; competitive pricing; broad test selection

$25.00Order
HealthLabs.com

Uses Quest and Labcorp; strong panel bundling; results in 1-3 days

$29.00Order
Life Extension

Uses Labcorp network; known for supplement company; competitive lab test pricing

$35.00Order
QuestDirect

Quest Diagnostics consumer-direct platform; results in 1-2 days; 2,100+ locations nationwide

$37.85Order
Request A Test

Uses Quest and Labcorp networks; offers both individual tests and discounted panels

$39.00Order
Personalabs

Uses Quest and Labcorp; no hidden draw or facility fees; moderate pricing

$40.00Order
DirectLabs

Uses Quest Diagnostics network; good panel pricing; established DTC provider

$56.25Order
Labcorp OnDemand

Labcorp consumer-direct platform; 2,000+ locations; results in 1-3 days

$59.00Order
Ulta Lab Tests

Uses Quest Diagnostics network; generally lowest DTC prices; not available in NY, NJ, RI

$73.95Order

Lab Codes

Proprietary codes used by each lab for this test.

American Esoteric Labs
E521(order_code)
American Esoteric Labs
E216(order_code)
ARUP Laboratories
0070079(order_code)
ARUP Laboratories
0070080(order_code)
BioReference Laboratories
1072-8(order)
Cleveland Clinic
ILG(mnemonic)
Cleveland Clinic
INS(mnemonic)
Clinical Labs of Hawaii
4824(order_code)
Clinical Labs of Hawaii
2555(order_code)
CPL
4920(order_code)
CPL
2760(order_code)
Geisinger Medical Labs
LAB2542(lab_id)
Geisinger Medical Labs
LAB2538(lab_id)
Interpath Laboratory
2738(order_code)
Interpath Laboratory
2227(order_code)
LabCorp
010363(order_code)
LabCorp
004564(order_code)
Mayo Clinic Labs
INSF/8684(order_code)
Mayo Clinic Labs
IGF1/80601(order_code)
Northwell Health Labs
5900868(order_code)
Northwell Health Labs
5302970(order_code)
NYU Langone Health
LAB526(order_code)
NYU Langone Health
LAB527(order_code)
Quest Diagnostics
561(order_code)
Quest Diagnostics
959(order_code)
Stanford Health Care
IGF1(order_code)
Stanford Health Care
INSLF(order_code)

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CPT: 82951

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For informational purposes only

This page is for educational and research purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. ICD-10 and CPT codes are assigned by your healthcare provider. Always consult a qualified healthcare provider before ordering any lab test or making decisions about your health.