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Diphtheria Antibody Blood Test

Washington rates for HCPCS 86648

A blood test that checks for antibodies the immune system makes in response to diphtheria, a serious bacterial infection that can affect the throat and airway. It helps determine whether a person has been previously exposed to diphtheria or has developed immunity, such as after vaccination. A blood sample is drawn and sent to the lab for antibody analysis.

Rates data updated October 2026.

How much does Diphtheria Antibody Blood Test cost?

$14.45

Typical negotiated rate. In Washington, October 2026.

Insurers have agreed to pay about $14.45 for this service. The price depends on where it is billed: about $13.80 from a physician practice, and about $22.91 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 9 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$13.80$9.77 to $14.79
FacilityA hospital or hospital-owned outpatient department$22.91$16.60 to $30.20

How much rates vary

Facilitymedian $23 · 10th to 90th $15 to $42Professionalmedian $14 · 10th to 90th $6 to $18
$10$20$50facility $23professional $14

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
$14.45
Median
$14.45
Typical High
$46.77
Aetna
Setting
Professional
Modifier
None
Typical Low
$14.45
Median
$14.45
Typical High
$18.20
Asuris Northwest Health
Setting
Facility
Modifier
None
Typical Low
$11.48
Median
$19.05
Typical High
$41.69
Asuris Northwest Health
Setting
Professional
Modifier
None
Typical Low
$11.48
Median
$13.80
Typical High
$15.14
Cigna
Setting
Facility
Modifier
None
Typical Low
$15.85
Median
$27.54
Typical High
$38.90
Cigna
Setting
Professional
Modifier
None
Typical Low
$9.55
Median
$15.85
Typical High
$21.88
Molina
Setting
Professional
Modifier
None
Typical Low
$9.77
Median
$13.49
Typical High
$13.49
Pacific Source
Setting
Facility
Modifier
None
Typical Low
$15.14
Median
$18.20
Typical High
$30.90
Premera BCBS
Setting
Facility
Modifier
None
Typical Low
$15.14
Median
$26.92
Typical High
$41.69
Premera BCBS
Setting
Professional
Modifier
None
Typical Low
$13.80
Median
$13.80
Typical High
$18.20
Regence BlueShield
Setting
Facility
Modifier
None
Typical Low
$15.14
Median
$25.12
Typical High
$41.69
Regence BlueShield
Setting
Professional
Modifier
None
Typical Low
$11.48
Median
$13.80
Typical High
$15.14
United
Setting
Facility
Modifier
None
Typical Low
$15.14
Median
$18.20
Typical High
$18.20
United
Setting
Professional
Modifier
None
Typical Low
$6.46
Median
$6.92
Typical High
$16.98
Wellpoint
Setting
Professional
Modifier
None
Typical Low
$6.92
Median
$15.14
Typical High
$27.54
2 more rates with less common billing modifiers

A modifier changes what was billed, for example a reduced or repeated service. Each of these modifiers carries under 10% of the published rates for this code. Modifier combinations, and modifiers with fewer than 30 rates for a carrier, are not listed.

Insurance Carrier
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$7.08
Median
$7.08
Typical High
$9.12
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$2.88
Median
$2.88
Typical High
$3.63

Where Washington sits

The same service costs 3.3 times more in South Carolina than in Maryland. 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.

Washington· 30th of 51

$14.45

SC $38.02MD $11.48

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.