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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 July 2026.

How much does Chemistry Test For A Specific Substance cost?

$30.90

Typical negotiated rate. In Louisiana, July 2026.

Insurers have agreed to pay about $30.90 for this service. The price depends on where it is billed: about $28.18 from a physician practice, and about $34.67 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$28.18$19.95 to $32.36
FacilityA hospital or hospital-owned outpatient department$34.67$30.20 to $66.07

How much rates vary

Facilitymedian $35 · 10th to 90th $26 to $91Professionalmedian $28 · 10th to 90th $15 to $45
$5.0$10.0$20.0$50.0$100.0facility $35professional $28

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
$26.92
Median
$33.88
Typical High
$91.20
Aetna
Setting
Professional
Modifier
Global
Typical Low
$19.05
Median
$30.20
Typical High
$51.29
BCBS
Setting
Facility
Modifier
Global
Typical Low
$30.20
Median
$50.12
Typical High
$87.10
BCBS
Setting
Professional
Modifier
Global
Typical Low
$19.50
Median
$27.54
Typical High
$44.67
Christus
Setting
Facility
Modifier
Global
Typical Low
$39.81
Median
$39.81
Typical High
$39.81
Cigna
Setting
Facility
Modifier
Global
Typical Low
$27.54
Median
$64.57
Typical High
$144.54
Cigna
Setting
Professional
Modifier
Global
Typical Low
$11.48
Median
$15.85
Typical High
$28.84
United
Setting
Facility
Modifier
Global
Typical Low
$10.47
Median
$25.12
Typical High
$28.84
United
Setting
Professional
Modifier
Global
Typical Low
$10.00
Median
$13.49
Typical High
$33.11

Where Louisiana 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.

Louisiana $30.90 · 9th 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.