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Antibody Test For A Specific Infection

Maryland rates for HCPCS 86631

This blood test checks for antibodies produced by the immune system in response to a particular infectious organism. Finding these antibodies usually indicates past or current exposure to that organism, which can help a clinician confirm a suspected diagnosis. It is ordered when a specific infection is being considered based on a patient's symptoms or history.

Rates data updated July 2026.

How much does Antibody Test For A Specific Infection cost?

$8.91

Typical negotiated rate. In Maryland, July 2026.

Insurers have agreed to pay about $8.91 for this service. The price depends on where it is billed: about $8.91 from a physician practice, and about $8.71 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 6 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$8.91$8.51 to $14.45
FacilityA hospital or hospital-owned outpatient department$8.71$6.46 to $8.71

How much rates vary

Facilitymedian $9 · 10th to 90th $6 to $15Professionalmedian $9 · 10th to 90th $7 to $46
$10$20$50facility $9professional $9

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
$6.46
Median
$8.71
Typical High
$12.02
Aetna
Setting
Professional
Modifier
Global
Typical Low
$7.76
Median
$8.91
Typical High
$45.71
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$2.95
Median
$8.51
Typical High
$12.59
Cigna
Setting
Facility
Modifier
Global
Typical Low
$6.31
Median
$8.13
Typical High
$15.14
Cigna
Setting
Professional
Modifier
Global
Typical Low
$6.46
Median
$12.02
Typical High
$28.84
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$11.75
Median
$14.13
Typical High
$22.91
United
Setting
Facility
Modifier
Global
Typical Low
$5.01
Median
$5.25
Typical High
$8.91
United
Setting
Professional
Modifier
Global
Typical Low
$5.37
Median
$6.76
Typical High
$11.22
Wellpoint
Setting
Professional
Modifier
Global
Typical Low
$4.57
Median
$8.13
Typical High
$17.78

Where Maryland sits

The same service costs 2.4 times more in Hawaii 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.

Maryland· 50th of 51

$8.91

HI $21.38DC $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.