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

Illinois rates for HCPCS 84305

This blood test measures IGF-1, a substance the liver produces in response to growth hormone. Because IGF-1 levels stay more stable throughout the day than growth hormone itself, this test is a useful way to evaluate whether the body is producing too much or too little growth hormone.

Rates data updated July 2026.

How much does Insulin-Like Growth Factor 1 (IGF-1) Test cost?

$29.51

Typical negotiated rate. In Illinois, July 2026.

Insurers have agreed to pay about $29.51 for this service. The price depends on where it is billed: about $18.20 from a physician practice, and about $64.57 from a hospital or other facility. The two figures are alternatives, not parts of one bill.

These are rates insurers have negotiated with providers, not the amount a patient is billed. What you owe depends on your plan's deductible and coinsurance. Based on rates published by 7 insurance carriers under federal price transparency rules.

Where it's billed changes the price

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$18.20$15.85 to $20.42
FacilityA hospital or hospital-owned outpatient department$64.57$33.11 to $174

How much rates vary

Facilitymedian $65 · 10th to 90th $21 to $234Professionalmedian $18 · 10th to 90th $3 to $41
$5$20$100$500$2Kfacility $65professional $18

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$21.38
Median
$69.18
Typical High
$234.42
Aetna
Setting
Professional
Modifier
Global
Typical Low
$16.22
Median
$19.05
Typical High
$43.65
Ambetter
Setting
Professional
Modifier
Global
Typical Low
$12.88
Median
$12.88
Typical High
$12.88
BCBS
Setting
Facility
Modifier
Global
Typical Low
$28.84
Median
$70.79
Typical High
$218.78
BCBS
Setting
Professional
Modifier
Global
Typical Low
$3.47
Median
$14.79
Typical High
$16.22
Cigna
Setting
Facility
Modifier
Global
Typical Low
$23.99
Median
$48.98
Typical High
$97.72
Cigna
Setting
Professional
Modifier
Global
Typical Low
$10.96
Median
$24.55
Typical High
$38.90
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$23.44
Median
$41.69
Typical High
$239.88
Hally Health
Setting
Facility
Modifier
Global
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$27.54
Median
$27.54
Typical High
$27.54
Molina
Setting
Professional
Modifier
Global
Typical Low
$11.75
Median
$11.75
Typical High
$14.79
United
Setting
Facility
Modifier
Global
Typical Low
$12.88
Median
$21.38
Typical High
$42.66
United
Setting
Professional
Modifier
Global
Typical Low
$8.91
Median
$13.49
Typical High
$21.38

Where Illinois sits

The same service costs 3.4 times more in Nebraska than in Washington, DC. Every bar is a state, most expensive first. Touch or drag across it to read any state, then open that state for its carriers and full range.

Illinois· 10th of 51

$29.51

NE $53.70DC $15.85

Median negotiated rate in each state, from every insurer that publishes one. States where no insurer publishes a rate for this service are not shown.