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Chemistry Test For A Specific Substance

Tennessee 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?

$20.42

Typical negotiated rate. In Tennessee, October 2026.

Insurers have agreed to pay about $20.42 for this service. The price depends on where it is billed: about $19.50 from a physician practice, and about $51.29 from a hospital or other facility.

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 4 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$19.50$13.18 to $27.54
FacilityA hospital or hospital-owned outpatient department$51.29$28.18 to $56.23

How much rates vary

Facilitymedian $51 · 10th to 90th $19 to $89Professionalmedian $19 · 10th to 90th $11 to $32
$5$10$20$50$100facility $51professional $19

Distribution of negotiated rates across all payers (price axis is log-scale). 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
$19.95
Typical High
$38.90
Aetna
Setting
Professional
Modifier
None
Typical Low
$19.05
Median
$19.95
Typical High
$30.20
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$9.55
Median
$10.00
Typical High
$15.14
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$3.80
Median
$3.98
Typical High
$6.03
BCBS Tennessee
Setting
Professional
Modifier
None
Typical Low
$13.18
Median
$26.30
Typical High
$32.36
Cigna
Setting
Facility
Modifier
None
Typical Low
$17.78
Median
$51.29
Typical High
$93.33
Cigna
Setting
Professional
Modifier
None
Typical Low
$11.48
Median
$15.49
Typical High
$36.31
United
Setting
Facility
Modifier
None
Typical Low
$83.18
Median
$83.18
Typical High
$83.18
United
Setting
Professional
Modifier
None
Typical Low
$10.47
Median
$15.14
Typical High
$29.51

Where Tennessee 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.

Tennessee· 40th of 51

$20.42

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.