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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 October 2026.

How much does Chemistry Test For A Specific Substance cost?

$19.50

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

Insurers have agreed to pay about $19.50 for this service. Most negotiated rates run $18.20 to $21.88.

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.

How much rates vary

Facilitymedian $43 · 10th to 90th $19 to $95Professionalmedian $19 · 10th to 90th $14 to $35
$5$10$20$50$100facility $43professional $19

Distribution of negotiated rates across all payers (price axis is log-scale). Small sample; interpret with caution. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$19.05
Median
$19.05
Typical High
$19.05
Aetna
Setting
Professional
Modifier
None
Typical Low
$19.05
Median
$19.05
Typical High
$19.05
CareFirst
Setting
Professional
Modifier
None
Typical Low
$18.20
Median
$19.95
Typical High
$21.88
Cigna
Setting
Facility
Modifier
None
Typical Low
$40.74
Median
$42.66
Typical High
$95.50
Cigna
Setting
Professional
Modifier
None
Typical Low
$13.80
Median
$28.84
Typical High
$186.21
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$45.71
Median
$45.71
Typical High
$52.48
United
Setting
Professional
Modifier
None
Typical Low
$9.33
Median
$13.80
Typical High
$26.92

Where Washington, DC sits

The same service costs 3.5 times more in Kansas than in Alabama. 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.

Washington, DC· 47th of 51

$19.50

KS $57.54AL $16.22

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.