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Chemistry Test For A Specific Substance

Illinois rates for HCPCS 84285

A laboratory chemistry test that measures how much of one particular substance is present in a sample sent to the lab. It is ordered when the amount of that substance is expected to answer a specific question about a person's health, and the result is read together with the rest of the picture.

Rates data updated July 2026.

How much does Chemistry Test For A Specific Substance cost?

$30.20

Typical negotiated rate. In Illinois, July 2026.

Insurers have agreed to pay about $30.20 for this service. The price depends on where it is billed: about $21.88 from a physician practice, and about $39.81 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 6 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$21.88$19.95 to $36.31
FacilityA hospital or hospital-owned outpatient department$39.81$25.70 to $51.29

How much rates vary

Facilitymedian $40 · 10th to 90th $21 to $69Professionalmedian $22 · 10th to 90th $17 to $54
$5.0$10.0$20.0$50.0$100.0$200.0facility $40professional $22

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
$20.89
Median
$39.81
Typical High
$53.70
Aetna
Setting
Professional
Modifier
Global
Typical Low
$19.50
Median
$21.88
Typical High
$51.29
BCBS
Setting
Facility
Modifier
Global
Typical Low
$16.60
Median
$33.88
Typical High
$257.04
BCBS
Setting
Professional
Modifier
Global
Typical Low
$17.38
Median
$19.50
Typical High
$19.50
Cigna
Setting
Facility
Modifier
Global
Typical Low
$26.30
Median
$54.95
Typical High
$117.49
Cigna
Setting
Professional
Modifier
Global
Typical Low
$13.18
Median
$29.51
Typical High
$45.71
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$25.12
Median
$47.86
Typical High
$162.18
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
$33.11
Median
$33.11
Typical High
$33.11
Molina
Setting
Professional
Modifier
Global
Typical Low
$13.80
Median
$13.80
Typical High
$13.80
United
Setting
Facility
Modifier
Global
Typical Low
$15.14
Median
$25.12
Typical High
$50.12
United
Setting
Professional
Modifier
Global
Typical Low
$6.46
Median
$13.80
Typical High
$25.12

Where Illinois sits

The same service costs 2.5 times more in South Dakota than in Maryland. Every bar is a state, most expensive first. Pick one to see its carriers and full range.

Illinois $30.20 · 10th of 51
SD $47.86MD $19.05

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.