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Giardia Stool Antigen Test

Illinois rates for HCPCS 87329

This laboratory test checks a stool sample for antigens from Giardia lamblia, a parasite that can cause diarrhea and digestive symptoms after being picked up from contaminated water or food. It offers a faster and often more sensitive way to detect this parasite than examining the stool under a microscope.

Rates data updated July 2026.

How much does Giardia Stool Antigen Test cost?

$19.05

Typical negotiated rate. In Illinois, July 2026.

Insurers have agreed to pay about $19.05 for this service. The price depends on where it is billed: about $9.77 from a physician practice, and about $50.12 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 7 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$9.77$9.12 to $12.02
FacilityA hospital or hospital-owned outpatient department$50.12$19.95 to $79.43

How much rates vary

Facilitymedian $50 · 10th to 90th $12 to $120Professionalmedian $10 · 10th to 90th $3 to $25
$5.0$10.0$20.0$50.0$100.0$200.0$500.0facility $50professional $10

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
$12.30
Median
$50.12
Typical High
$120.23
Aetna
Setting
Professional
Modifier
Global
Typical Low
$9.33
Median
$10.72
Typical High
$24.55
Ambetter
Setting
Professional
Modifier
Global
Typical Low
$7.41
Median
$7.41
Typical High
$15.85
BCBS
Setting
Facility
Modifier
Global
Typical Low
$15.85
Median
$32.36
Typical High
$123.03
BCBS
Setting
Professional
Modifier
Global
Typical Low
$3.47
Median
$8.32
Typical High
$9.12
Cigna
Setting
Facility
Modifier
Global
Typical Low
$13.49
Median
$27.54
Typical High
$54.95
Cigna
Setting
Professional
Modifier
Global
Typical Low
$6.31
Median
$13.80
Typical High
$21.88
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$13.18
Median
$34.67
Typical High
$125.89
Hally Health
Setting
Facility
Modifier
Global
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$15.49
Median
$15.49
Typical High
$15.49
Molina
Setting
Professional
Modifier
Global
Typical Low
$6.61
Median
$8.32
Typical High
$15.14
United
Setting
Facility
Modifier
Global
Typical Low
$8.91
Median
$12.02
Typical High
$23.99
United
Setting
Professional
Modifier
Global
Typical Low
$5.01
Median
$8.91
Typical High
$14.13

Where Illinois sits

The same service costs 7.4 times more in West Virginia than in Washington, DC. Every bar is a state, most expensive first. Pick one to see its carriers and full range.

Illinois $19.05 · 12th of 51
WV $66.07DC $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.