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Procedure price report · Laboratory - Chemistry and Hematology

Phosphatidylglycerol test on amniotic fluid

CPT 84081the billing code this page is about

Measures phosphatidylglycerol, a fat found in amniotic fluid, as a marker of fetal lung development.

Hospitals typically charge $90 cash for this outpatient procedure — the median across 853 hospitals that filed a usable cash price; the average of the middle 60% is $102. Most fall between $32 and $202 (20th–80th percentile).

Hospitals
853
States
49
Filings dated
Dec 2024 – Sep 2026
Computed
September 25, 2026
Prices checked
through September 24, 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 853 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
$19$38$90$184$326

The most expensive tenth of hospitals charges at least 17× what the cheapest tenth charges ($19 vs $326).

How the prices are spread

$17 – $24: 80 hospitals$17$24 – $35: 84 hospitals$35 – $51: 97 hospitals$35$51 – $74: 90 hospitals$74 – $107: 76 hospitals$74$107 – $155: 88 hospitals$155 – $226: 156 hospitals$155$226 – $328: 61 hospitals$328 – $477: 24 hospitals$328$477 – $693: 19 hospitals$477median $90price bands are equal on a log scale
Hospitals per price band (775 of 853 — the bands cover the 5th to 95th percentile)
FromToHospitals
$17$2480
$24$3584
$35$5197
$51$7490
$74$10776
$107$15588
$155$226156
$226$32861
$328$47724
$477$69319

By state

The median cash price in each state, against the national median of $90.

Alaska: 6 hospitals filed a usable price — fewer than 10, so no figureAKMaine: 5 hospitals filed a usable price — fewer than 10, so no figureMEVermont: 1 hospital filed a usable price — fewer than 10, so no figureVTNew Hampshire: 1 hospital filed a usable price — fewer than 10, so no figureNHWashington: median $73 across 22 hospitalsWA$73Idaho: 3 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 3 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: 4 hospitals filed a usable price — fewer than 10, so no figureNDMinnesota: 2 hospitals filed a usable price — fewer than 10, so no figureMNIllinois: median $233 across 41 hospitalsIL$233Wisconsin: 9 hospitals filed a usable price — fewer than 10, so no figureWIMichigan: median $29 across 22 hospitalsMI$29New York: median $46 across 41 hospitalsNY$46Massachusetts: 8 hospitals filed a usable price — fewer than 10, so no figureMAOregon: median $87 across 15 hospitalsOR$87Nevada: 4 hospitals filed a usable price — fewer than 10, so no figureNVWyoming: 2 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 3 hospitals filed a usable price — fewer than 10, so no figureSDIowa: median $42 across 17 hospitalsIA$42Indiana: median $46 across 41 hospitalsIN$46Ohio: median $163 across 37 hospitalsOH$163Pennsylvania: median $19 across 39 hospitalsPA$19New Jersey: median $18 across 36 hospitalsNJ$18Connecticut: 8 hospitals filed a usable price — fewer than 10, so no figureCTRhode Island: 2 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $134 across 66 hospitalsCA$134Utah: 5 hospitals filed a usable price — fewer than 10, so no figureUTColorado: median $109 across 20 hospitalsCO$109Nebraska: 9 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: median $146 across 28 hospitalsMO$146Kentucky: median $190 across 25 hospitalsKY$190West Virginia: 3 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: median $179 across 13 hospitalsVA$179Maryland: 5 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: no hospital in the corpus filed a usable priceDEArizona: median $62 across 13 hospitalsAZ$62New Mexico: 1 hospital filed a usable price — fewer than 10, so no figureNMKansas: median $185 across 15 hospitalsKS$185Arkansas: 7 hospitals filed a usable price — fewer than 10, so no figureARTennessee: median $29 across 17 hospitalsTN$29North Carolina: median $131 across 36 hospitalsNC$131South Carolina: 8 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $40 across 22 hospitalsOK$40Louisiana: median $37 across 17 hospitalsLA$37Mississippi: median $71 across 12 hospitalsMS$71Alabama: median $71 across 12 hospitalsAL$71Georgia: median $76 across 32 hospitalsGA$76Hawaii: 6 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $195 across 81 hospitalsTX$195Florida: median $55 across 28 hospitalsFL$55
Cash price by state, most expensive first. National median $90. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Illinois IL41$233+158%$42 – $309
Texas TX81$195+116%$84 – $847
Kentucky KY25$190+111%$61 – $591
Kansas KS15$185+105%$31 – $268
Virginia VA13$179+98%$73 – $251
Ohio OH37$163+81%$84 – $193
Missouri MO28$146+61%$43 – $238
California CA66$134+49%$46 – $167
North Carolina NC36$131+45%$57 – $184
Colorado CO20$109+21%$95 – $1,728
Oregon OR15$87−4%$66 – $156
Georgia GA32$76−16%$34 – $320
Washington WA22$73−19%$31 – $103
Mississippi MS12$71−21%$44 – $151
Alabama AL12$71−22%$40 – $112
Arizona AZ13$62−31%$39 – $183
Florida FL28$55−39%$28 – $305
New York NY41$46−49%$17 – $72
Indiana IN41$46−50%$30 – $122
Iowa IA17$42−54%$42 – $85
Oklahoma OK22$40−56%$29 – $97
Louisiana LA17$37−59%$23 – $90
Michigan MI22$29−68%$18 – $62
Tennessee TN17$29−68%$20 – $46
Pennsylvania PA39$19−79%$13 – $112
New Jersey NJ36$18−80%$17 – $111
Nebraska NE9not enough hospitals filed a usable price
Wisconsin WI9not enough hospitals filed a usable price
Connecticut CT8not enough hospitals filed a usable price
Massachusetts MA8not enough hospitals filed a usable price
South Carolina SC8not enough hospitals filed a usable price
Arkansas AR7not enough hospitals filed a usable price
Alaska AK6not enough hospitals filed a usable price
Hawaii HI6not enough hospitals filed a usable price
Maryland MD5not enough hospitals filed a usable price
Maine ME5not enough hospitals filed a usable price
Utah UT5not enough hospitals filed a usable price
North Dakota ND4not enough hospitals filed a usable price
Nevada NV4not enough hospitals filed a usable price
Idaho ID3not enough hospitals filed a usable price
Montana MT3not enough hospitals filed a usable price
South Dakota SD3not enough hospitals filed a usable price
West Virginia WV3not enough hospitals filed a usable price
Minnesota MN2not enough hospitals filed a usable price
Rhode Island RI2not enough hospitals filed a usable price
Wyoming WY2not enough hospitals filed a usable price
New Hampshire NH1not enough hospitals filed a usable price
New Mexico NM1not enough hospitals filed a usable price
Vermont VT1not 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 $90.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care723$88$29 – $195
Children’s7fewer than 20 hospitals
Critical access120$106$41 – $243
Ownership
For-profit140$114$35 – $847
Government89$70$32 – $152
Non-profit621$92$30 – $193
System affiliation
Part of a system716$95$31 – $211
Independent137$85$33 – $172

Cash price vs list price

Median list price (chargemaster)$201
Median cash price$90
Cash as a share of list, median hospital60%

At the typical hospital, asking for the cash price cuts the list price by about 40%. 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

553 hospitals filed a usable inpatient cash price for this code. The median is $109 and the average of the middle 60% is $110; most fall between $41 and $193.

Cash price percentiles, inpatient, across 553 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
$30$45$109$173$260

The most expensive tenth of hospitals charges at least 8.8× what the cheapest tenth charges ($30 vs $260).

Of the 623 hospitals that filed this code inpatient, 553 gave a usable cash price; 31 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 39 a list price only.

How complete is this

853 of the 3,956 hospitals with a price file in our corpus (22%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 941 hospitals that filed this code at all gave us
Usable cash price — counted853
Cash price carrying a plausibility flag — shown on the compare tool, excluded here44
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded0
An estimate rather than a filed cash price — excluded0
A list price only, no cash figure — excluded44
Hospitals that filed this code941

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 September 4, 2026 and September 24, 2026; the figures were computed September 25, 2026 from filings loaded through September 24, 2026. The percentiles and averages use only the “counted” row.

Related procedures

Part of the Laboratory - Chemistry and Hematology family.

Hospitals file this code under descriptions such as ASSAY PHOSPHATIDYLGLYCEROL.

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, “Phosphatidylglycerol test on amniotic fluid (CPT 84081) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-84081-phosphatidylglycerol-test-on-amniotic-fluid