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Chemistry Test For A Specific Substance

Louisiana 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?

$30.20

Typical negotiated rate. In Louisiana, October 2026.

Insurers have agreed to pay about $30.20 for this service. The price depends on where it is billed: about $20.42 from a physician practice, and about $47.86 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 5 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$20.42$13.49 to $28.84
FacilityA hospital or hospital-owned outpatient department$47.86$33.11 to $69.18

How much rates vary

Facilitymedian $48 · 10th to 90th $26 to $95Professionalmedian $20 · 10th to 90th $10 to $33
$5$10$20$50$100facility $48professional $20

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
$26.92
Median
$34.67
Typical High
$128.82
Aetna
Setting
Facility
Modifier
52 · Reduced service
Typical Low
$13.49
Median
$17.38
Typical High
$64.57
Aetna
Setting
Facility
Modifier
53 · Discontinued
Typical Low
$5.37
Median
$6.92
Typical High
$25.70
Aetna
Setting
Professional
Modifier
None
Typical Low
$26.92
Median
$30.20
Typical High
$33.11
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$13.49
Median
$15.14
Typical High
$16.22
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$5.37
Median
$6.17
Typical High
$6.61
BCBS Louisiana
Setting
Facility
Modifier
None
Typical Low
$30.20
Median
$51.29
Typical High
$89.13
BCBS Louisiana
Setting
Professional
Modifier
None
Typical Low
$19.50
Median
$27.54
Typical High
$35.48
Christus
Setting
Facility
Modifier
None
Typical Low
$39.81
Median
$39.81
Typical High
$39.81
Cigna
Setting
Facility
Modifier
None
Typical Low
$27.54
Median
$54.95
Typical High
$141.25
Cigna
Setting
Professional
Modifier
None
Typical Low
$11.48
Median
$15.85
Typical High
$28.84
United
Setting
Facility
Modifier
None
Typical Low
$10.47
Median
$22.91
Typical High
$25.12
United
Setting
Professional
Modifier
None
Typical Low
$10.00
Median
$13.80
Typical High
$31.62

Where Louisiana 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.

Louisiana· 12th of 51

$30.20

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.