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Chemistry Test For A Specific Substance

Washington, DC 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?

$19.05

Typical negotiated rate. In Washington, DC, July 2026.

Insurers have agreed to pay about $19.05 for this service. The price depends on where it is billed: about $19.05 from a physician practice, and about $42.66 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 5 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$19.05$19.05 to $19.05
FacilityA hospital or hospital-owned outpatient department$42.66$19.05 to $79.43

How much rates vary

Facilitymedian $43 · 10th to 90th $19 to $110Professionalmedian $19 · 10th to 90th $19 to $55
$5.0$10.0$20.0$50.0$100.0$200.0facility $43professional $19

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
$19.05
Median
$57.54
Typical High
$109.65
Aetna
Setting
Professional
Modifier
Global
Typical Low
$19.05
Median
$19.05
Typical High
$19.05
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$44.67
Median
$79.43
Typical High
$263.03
Cigna
Setting
Facility
Modifier
Global
Typical Low
$40.74
Median
$42.66
Typical High
$95.50
Cigna
Setting
Professional
Modifier
Global
Typical Low
$13.80
Median
$28.84
Typical High
$194.98
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$45.71
Median
$45.71
Typical High
$51.29
United
Setting
Facility
Modifier
Global
Typical Low
$13.80
Median
$30.20
Typical High
$30.20
United
Setting
Professional
Modifier
Global
Typical Low
$9.33
Median
$13.80
Typical High
$26.92

Where Washington, DC 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, DC $19.05 · 50th 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.