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Procedure price report · Microscopic examination (bacterial smear, culture, toxicology)

Giardia antigen test (enzyme immunoassay)

CPT 87329the billing code this page is about

Laboratory test that detects antigen of the Giardia parasite, usually in stool, using an enzyme immunoassay.

Hospitals typically charge $61 cash for this outpatient procedure — the median across 3,020 hospitals that filed a usable cash price; the average of the middle 60% is $65. Most fall between $28 and $123 (20th–80th percentile).

Hospitals
3,020
States
50
Filings dated
Dec 2022 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 25, 2026

Median: half of hospitals filed less, half more — and it is a price some hospital actually filed. Average of the middle 60%: the mean of the prices between the 20th and 80th percentiles. We never publish the plain average, the lowest or the highest price: the extremes in hospital price files are chargemaster artefacts, not prices anyone pays.

What hospitals charge, from cheapest to most expensive

Cash price percentiles, outpatient, across 3,020 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$18$34$61$105$168

The most expensive tenth of hospitals charges at least 9.2× what the cheapest tenth charges ($18 vs $168).

How the prices are spread

$13 – $17: 123 hospitals$13$17 – $23: 159 hospitals$23 – $30: 241 hospitals$23$30 – $41: 302 hospitals$41 – $55: 387 hospitals$41$55 – $74: 419 hospitals$74 – $100: 430 hospitals$74$100 – $135: 298 hospitals$135 – $181: 253 hospitals$135$181 – $244: 111 hospitals$181median $61price bands are equal on a log scale
Hospitals per price band (2,723 of 3,020 — the bands cover the 5th to 95th percentile)
FromToHospitals
$13$17123
$17$23159
$23$30241
$30$41302
$41$55387
$55$74419
$74$100430
$100$135298
$135$181253
$181$244111

By state

The median cash price in each state, against the national median of $61.

Alaska: median $150 across 19 hospitalsAK$150Maine: median $71 across 27 hospitalsME$71Vermont: median $100 across 11 hospitalsVT$100New Hampshire: median $60 across 23 hospitalsNH$60Washington: median $75 across 74 hospitalsWA$75Idaho: median $34 across 22 hospitalsID$34Montana: median $71 across 26 hospitalsMT$71North Dakota: median $77 across 30 hospitalsND$77Minnesota: median $60 across 80 hospitalsMN$60Illinois: median $74 across 119 hospitalsIL$74Wisconsin: median $74 across 79 hospitalsWI$74Michigan: median $47 across 89 hospitalsMI$47New York: median $39 across 93 hospitalsNY$39Massachusetts: median $65 across 46 hospitalsMA$65Oregon: median $55 across 48 hospitalsOR$55Nevada: median $59 across 20 hospitalsNV$59Wyoming: median $80 across 15 hospitalsWY$80South Dakota: median $126 across 39 hospitalsSD$126Iowa: median $70 across 76 hospitalsIA$70Indiana: median $52 across 94 hospitalsIN$52Ohio: median $56 across 134 hospitalsOH$56Pennsylvania: median $64 across 119 hospitalsPA$64New Jersey: median $14 across 48 hospitalsNJ$14Connecticut: median $37 across 15 hospitalsCT$37Rhode Island: 7 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $39 across 137 hospitalsCA$39Utah: median $118 across 42 hospitalsUT$118Colorado: median $88 across 62 hospitalsCO$88Nebraska: median $101 across 77 hospitalsNE$101Missouri: median $60 across 69 hospitalsMO$60Kentucky: median $53 across 65 hospitalsKY$53West Virginia: median $54 across 35 hospitalsWV$54Virginia: median $69 across 70 hospitalsVA$69Maryland: median $68 across 38 hospitalsMD$68Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $36 across 36 hospitalsAZ$36New Mexico: median $59 across 20 hospitalsNM$59Kansas: median $82 across 79 hospitalsKS$82Arkansas: median $37 across 24 hospitalsAR$37Tennessee: median $37 across 75 hospitalsTN$37North Carolina: median $38 across 83 hospitalsNC$38South Carolina: median $135 across 44 hospitalsSC$135Oklahoma: median $50 across 72 hospitalsOK$50Louisiana: median $39 across 46 hospitalsLA$39Mississippi: median $26 across 50 hospitalsMS$26Alabama: median $58 across 42 hospitalsAL$58Georgia: median $51 across 105 hospitalsGA$51Hawaii: median $76 across 13 hospitalsHI$76Texas: median $65 across 229 hospitalsTX$65Florida: median $54 across 147 hospitalsFL$54
Cash price by state, most expensive first. National median $61. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Alaska AK19$150+147%$101 – $277
South Carolina SC44$135+122%$80 – $181
South Dakota SD39$126+107%$95 – $178
Utah UT42$118+95%$112 – $132
Nebraska NE77$101+66%$37 – $140
Vermont VT11$100+64%$52 – $201
Colorado CO62$88+44%$58 – $174
Kansas KS79$82+35%$43 – $116
Wyoming WY15$80+32%$25 – $132
North Dakota ND30$77+27%$22 – $100
Hawaii HI13$76+25%$61 – $96
Washington WA74$75+23%$50 – $111
Wisconsin WI79$74+22%$49 – $132
Illinois IL119$74+21%$42 – $146
Montana MT26$71+17%$55 – $93
Maine ME27$71+16%$32 – $113
Iowa IA76$70+15%$39 – $100
Virginia VA70$69+13%$47 – $113
Maryland MD38$68+12%$50 – $81
Massachusetts MA46$65+7%$42 – $118
Texas TX229$65+6%$24 – $178
Pennsylvania PA119$64+5%$18 – $141
New Hampshire NH23$60−1%$38 – $145
Minnesota MN80$60−1%$33 – $93
Missouri MO69$60−2%$45 – $109
New Mexico NM20$59−2%$46 – $94
Nevada NV20$59−3%$19 – $126
Alabama AL42$58−5%$29 – $188
Ohio OH134$56−8%$38 – $101
Oregon OR48$55−9%$34 – $72
West Virginia WV35$54−11%$31 – $93
Florida FL147$54−12%$15 – $152
Kentucky KY65$53−13%$30 – $111
Indiana IN94$52−15%$27 – $88
Georgia GA105$51−17%$31 – $135
Oklahoma OK72$50−18%$28 – $88
Michigan MI89$47−22%$17 – $76
Louisiana LA46$39−36%$23 – $100
New York NY93$39−36%$16 – $99
California CA137$39−36%$12 – $128
North Carolina NC83$38−38%$23 – $88
Arkansas AR24$37−38%$11 – $64
Connecticut CT15$37−39%$26 – $52
Tennessee TN75$37−39%$21 – $102
Arizona AZ36$36−41%$30 – $144
Idaho ID22$34−44%$20 – $86
Mississippi MS50$26−57%$21 – $82
New Jersey NJ48$14−77%$12 – $42
Delaware DE7not enough hospitals filed a usable price
Rhode Island RI7not enough hospitals filed a usable price

Hospitals like yours

The same distribution cut by the kind of hospital. Hospital type and ownership come from CMS; a hospital counts as part of a system when its price file is shared with at least one other hospital under the same brand. The national median is $61.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care2,098$56$25 – $124
Children’s47$84$42 – $150
Critical access865$71$37 – $120
Ownership
For-profit426$76$27 – $226
Government565$65$30 – $115
Non-profit2,019$58$27 – $112
System affiliation
Part of a system2,462$60$27 – $124
Independent558$65$33 – $117

Cash price vs list price

Median list price (chargemaster)$103
Median cash price$61
Cash as a share of list, median hospital65%

At the typical hospital, asking for the cash price cuts the list price by about 35%. The share is the median of each hospital’s own cash ÷ list ratio, over hospitals that filed both — not the ratio of the two medians above.

The same procedure, inpatient

2,054 hospitals filed a usable inpatient cash price for this code. The median is $62 and the average of the middle 60% is $65; most fall between $29 and $117.

Cash price percentiles, inpatient, across 2,054 hospitals. Each figure is a price a hospital filed. 10th: one in ten hospitals charges less; 25th: a quarter charge less; Median: half charge less; 75th: three quarters charge less; 90th: nine in ten charge less.
10th25thMedian75th90th
$20$36$62$101$158

The most expensive tenth of hospitals charges at least 8.1× what the cheapest tenth charges ($20 vs $158).

Of the 2,266 hospitals that filed this code inpatient, 2,054 gave a usable cash price; 110 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 102 a list price only.

How complete is this

3,020 of the 3,956 hospitals with a price file in our corpus (76%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 3,292 hospitals that filed this code at all gave us
Usable cash price — counted3,020
Cash price carrying a plausibility flag — shown on the compare tool, excluded here152
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded3
An estimate rather than a filed cash price — excluded2
A list price only, no cash figure — excluded115
Hospitals that filed this code3,292

Sections not shown for this setting

  • Against Medicare: Medicare has no separately payable national outpatient (OPPS) rate for this code, so there is nothing honest to compare against.
  • Since our last snapshot: there is no earlier snapshot at least 90 days older than this one yet.

We last checked these hospitals’ price files for changes between July 20, 2026 and September 25, 2026; the figures were computed September 25, 2026 from filings loaded through September 25, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Microscopic examination (bacterial smear, culture, toxicology) family.

Hospitals file this code under descriptions such as HC Giardia Ag.

Method

Source
The machine-readable price files every U.S. hospital is required by CMS to publish, parsed per hospital. Nothing is surveyed, sampled or modelled.
What counts
One cash (self-pay) price per hospital for this code and setting. A hospital’s own filing can rule its number out — a placeholder, a “not applicable” note, a list price standing in for cash — and our plausibility checks can flag a price far below what every other hospital files. Both kinds are disclosed above and excluded from the statistics; on the compare tool a flagged price is still shown.
Statistics
Percentiles are discrete: each is a price some hospital filed. The average is the mean of the prices between the 20th and 80th percentiles. We never publish the plain mean, the minimum or the maximum. A state needs 10 hospitals and a segment 20 to show a figure; otherwise the row shows its count and no number. Medicare is the national unadjusted OPPS rate where one exists.
Names
Procedure names on these pages are our own plain-language titles, not the AMA’s copyrighted CPT descriptors. The code is the identity.

The full rules — sources, statistics, thresholds, limitations — are on the methodology page.

Download this page’s figures: JSON · CSV. Aggregates only — the per-hospital prices are on the compare tool.

Cite: HospitalRates.com, “Giardia antigen test (enzyme immunoassay) (CPT 87329) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-87329-giardia-antigen-test-enzyme-immunoassay