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Gel Diffusion Test For A Specific Substance

Oklahoma rates for HCPCS 86331

A laboratory test in which the sample and a matching testing solution are placed in separate wells cut into a gel and left to spread slowly toward each other. If the substance being looked for is present, a visible line forms in the gel where the two meet. The result is a present or absent answer, reported once for each substance the laboratory checks for.

Rates data updated July 2026.

How much does Gel Diffusion Test For A Specific Substance cost?

$13.18

Typical negotiated rate. In Oklahoma, July 2026.

Insurers have agreed to pay about $13.18 for this service. The price depends on where it is billed: about $10.72 from a physician practice, and about $37.15 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$10.72$7.76 to $11.48
FacilityA hospital or hospital-owned outpatient department$37.15$12.02 to $53.70

How much rates vary

Facilitymedian $37 · 10th to 90th $9 to $68Professionalmedian $11 · 10th to 90th $6 to $11
$10$20$50$100facility $37professional $11

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
$8.91
Median
$12.02
Typical High
$53.70
Aetna
Setting
Professional
Modifier
Global
Typical Low
$7.76
Median
$8.91
Typical High
$10.72
BCBS
Setting
Facility
Modifier
Global
Typical Low
$33.88
Median
$46.77
Typical High
$67.61
BCBS
Setting
Professional
Modifier
Global
Typical Low
$11.48
Median
$11.48
Typical High
$11.48
Cigna
Setting
Facility
Modifier
Global
Typical Low
$7.94
Median
$18.20
Typical High
$32.36
Cigna
Setting
Professional
Modifier
Global
Typical Low
$5.37
Median
$7.24
Typical High
$16.98
Medica
Setting
Facility
Modifier
Global
Typical Low
$10.23
Median
$12.02
Typical High
$194.98
Medica
Setting
Professional
Modifier
Global
Typical Low
$5.01
Median
$6.92
Typical High
$15.85
United
Setting
Facility
Modifier
Global
Typical Low
$5.89
Median
$12.02
Typical High
$16.22
United
Setting
Professional
Modifier
Global
Typical Low
$5.01
Median
$6.92
Typical High
$12.02

Where Oklahoma sits

The same service costs 2.6 times more in South Dakota than in Washington, DC. 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.

Oklahoma· 27th of 51

$13.18

SD $22.91DC $8.91

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.