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Chemistry Test For A Specific Substance

Washington 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?

$26.30

Typical negotiated rate. In Washington, July 2026.

Insurers have agreed to pay about $26.30 for this service. The price depends on where it is billed: about $23.44 from a physician practice, and about $40.74 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 9 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$23.44$22.91 to $30.20
FacilityA hospital or hospital-owned outpatient department$40.74$26.30 to $54.95

How much rates vary

Facilitymedian $41 · 10th to 90th $25 to $105Professionalmedian $23 · 10th to 90th $14 to $50
$5.0$10.0$20.0$50.0$100.0$200.0facility $41professional $23

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
$23.44
Median
$53.70
Typical High
$134.90
Aetna
Setting
Professional
Modifier
Global
Typical Low
$23.44
Median
$23.44
Typical High
$165.96
Asuris Northwest Health
Setting
Facility
Modifier
Global
Typical Low
$25.12
Median
$31.62
Typical High
$69.18
Asuris Northwest Health
Setting
Professional
Modifier
Global
Typical Low
$19.05
Median
$22.91
Typical High
$25.12
Cigna
Setting
Facility
Modifier
Global
Typical Low
$26.30
Median
$53.70
Typical High
$75.86
Cigna
Setting
Professional
Modifier
Global
Typical Low
$14.79
Median
$26.92
Typical High
$38.90
Molina
Setting
Professional
Modifier
Global
Typical Low
$16.22
Median
$22.39
Typical High
$64.57
Pacific Source
Setting
Facility
Modifier
Global
Typical Low
$25.12
Median
$25.12
Typical High
$51.29
Pacific Source
Setting
Professional
Modifier
Global
Typical Low
$25.12
Median
$25.12
Typical High
$25.12
Premera BCBS
Setting
Facility
Modifier
Global
Typical Low
$25.12
Median
$43.65
Typical High
$77.62
Premera BCBS
Setting
Professional
Modifier
Global
Typical Low
$22.91
Median
$22.91
Typical High
$30.20
Regence BlueShield
Setting
Facility
Modifier
Global
Typical Low
$25.12
Median
$38.02
Typical High
$67.61
Regence BlueShield
Setting
Professional
Modifier
Global
Typical Low
$19.05
Median
$22.91
Typical High
$25.12
United
Setting
Facility
Modifier
Global
Typical Low
$23.99
Median
$30.20
Typical High
$30.20
United
Setting
Professional
Modifier
Global
Typical Low
$10.47
Median
$12.59
Typical High
$30.20
Wellpoint
Setting
Professional
Modifier
Global
Typical Low
$11.22
Median
$13.18
Typical High
$45.71

Where Washington 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.

Washington $26.30 · 24th 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.