HRHospitalRates.comCompare prices

Procedure price report · Laboratory - Chemistry and Hematology

Platelet-based phospholipid neutralization clotting test

CPT 85597the billing code this page is about

A follow-up clotting test using platelet phospholipid to confirm whether a prolonged clotting time is caused by a lupus anticoagulant.

Hospitals typically charge $82 cash for this outpatient procedure — the median across 2,090 hospitals that filed a usable cash price; the average of the middle 60% is $87. Most fall between $34 and $167 (20th–80th percentile).

Hospitals
2,090
States
50
Filings dated
Mar 2023 – 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 2,090 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
$21$40$82$145$230

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($21 vs $230).

How the prices are spread

$17 – $23: 130 hospitals$17$23 – $30: 123 hospitals$30 – $40: 178 hospitals$30$40 – $54: 171 hospitals$54 – $72: 228 hospitals$54$72 – $96: 270 hospitals$96 – $129: 268 hospitals$96$129 – $172: 225 hospitals$172 – $229: 181 hospitals$172$229 – $306: 113 hospitals$229median $82price bands are equal on a log scale
Hospitals per price band (1,887 of 2,090 — the bands cover the 5th to 95th percentile)
FromToHospitals
$17$23130
$23$30123
$30$40178
$40$54171
$54$72228
$72$96270
$96$129268
$129$172225
$172$229181
$229$306113

By state

The median cash price in each state, against the national median of $82.

Alaska: median $58 across 11 hospitalsAK$58Maine: median $33 across 15 hospitalsME$33Vermont: 5 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: 9 hospitals filed a usable price — fewer than 10, so no figureNHWashington: median $67 across 52 hospitalsWA$67Idaho: 9 hospitals filed a usable price — fewer than 10, so no figureIDMontana: 9 hospitals filed a usable price — fewer than 10, so no figureMTNorth Dakota: median $88 across 18 hospitalsND$88Minnesota: median $94 across 50 hospitalsMN$94Illinois: median $98 across 98 hospitalsIL$98Wisconsin: median $99 across 60 hospitalsWI$99Michigan: median $68 across 50 hospitalsMI$68New York: median $59 across 77 hospitalsNY$59Massachusetts: median $72 across 37 hospitalsMA$72Oregon: median $78 across 20 hospitalsOR$78Nevada: median $88 across 11 hospitalsNV$88Wyoming: median $80 across 10 hospitalsWY$80South Dakota: 8 hospitals filed a usable price — fewer than 10, so no figureSDIowa: median $63 across 42 hospitalsIA$63Indiana: median $44 across 74 hospitalsIN$44Ohio: median $86 across 110 hospitalsOH$86Pennsylvania: median $107 across 109 hospitalsPA$107New Jersey: median $21 across 50 hospitalsNJ$21Connecticut: median $96 across 17 hospitalsCT$96Rhode Island: 6 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $77 across 87 hospitalsCA$77Utah: median $243 across 31 hospitalsUT$243Colorado: median $83 across 40 hospitalsCO$83Nebraska: median $135 across 41 hospitalsNE$135Missouri: median $85 across 60 hospitalsMO$85Kentucky: median $166 across 46 hospitalsKY$166West Virginia: median $87 across 15 hospitalsWV$87Virginia: median $95 across 53 hospitalsVA$95Maryland: median $136 across 36 hospitalsMD$136Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $119 across 20 hospitalsAZ$119New Mexico: 7 hospitals filed a usable price — fewer than 10, so no figureNMKansas: median $192 across 40 hospitalsKS$192Arkansas: median $77 across 20 hospitalsAR$77Tennessee: median $56 across 50 hospitalsTN$56North Carolina: median $70 across 57 hospitalsNC$70South Carolina: median $137 across 45 hospitalsSC$137Oklahoma: median $85 across 40 hospitalsOK$85Louisiana: median $40 across 37 hospitalsLA$40Mississippi: median $58 across 35 hospitalsMS$58Alabama: median $71 across 20 hospitalsAL$71Georgia: median $88 across 77 hospitalsGA$88Hawaii: median $84 across 14 hospitalsHI$84Texas: median $99 across 169 hospitalsTX$99Florida: median $37 across 86 hospitalsFL$37
Cash price by state, most expensive first. National median $82. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Utah UT31$243+197%$75 – $286
Kansas KS40$192+134%$64 – $314
Kentucky KY46$166+103%$54 – $225
South Carolina SC45$137+67%$70 – $186
Maryland MD36$136+66%$107 – $163
Nebraska NE41$135+65%$55 – $182
Arizona AZ20$119+45%$49 – $180
Pennsylvania PA109$107+31%$21 – $211
Wisconsin WI60$99+22%$51 – $142
Texas TX169$99+21%$32 – $176
Illinois IL98$98+19%$42 – $199
Connecticut CT17$96+18%$57 – $150
Virginia VA53$95+16%$40 – $209
Minnesota MN50$94+15%$55 – $159
Nevada NV11$88+8%$54 – $153
North Dakota ND18$88+8%$31 – $155
Georgia GA77$88+7%$36 – $139
West Virginia WV15$87+6%$57 – $203
Ohio OH110$86+5%$49 – $256
Oklahoma OK40$85+4%$39 – $114
Missouri MO60$85+4%$42 – $161
Hawaii HI14$84+3%$47 – $110
Colorado CO40$83+1%$57 – $230
Wyoming WY10$80−2%$37 – $174
Oregon OR20$78−4%$47 – $92
Arkansas AR20$77−5%$36 – $112
California CA87$77−5%$20 – $128
Massachusetts MA37$72−12%$44 – $93
Alabama AL20$71−13%$27 – $200
North Carolina NC57$70−15%$46 – $146
Michigan MI50$68−17%$25 – $120
Washington WA52$67−18%$52 – $90
Iowa IA42$63−23%$33 – $155
New York NY77$59−28%$21 – $108
Alaska AK11$58−29%$27 – $154
Mississippi MS35$58−30%$24 – $99
Tennessee TN50$56−31%$16 – $66
Indiana IN74$44−46%$29 – $124
Louisiana LA37$40−51%$18 – $82
Florida FL86$37−55%$15 – $192
Maine ME15$33−59%$15 – $60
New Jersey NJ50$21−75%$18 – $50
Idaho ID9not enough hospitals filed a usable price
Montana MT9not enough hospitals filed a usable price
New Hampshire NH9not enough hospitals filed a usable price
South Dakota SD8not enough hospitals filed a usable price
Delaware DE7not enough hospitals filed a usable price
New Mexico NM7not enough hospitals filed a usable price
Rhode Island RI6not enough hospitals filed a usable price
Vermont VT5not 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 $82.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,581$79$31 – $162
Children’s36$122$44 – $210
Critical access467$91$44 – $168
Ownership
For-profit275$88$36 – $230
Government329$73$35 – $130
Non-profit1,480$83$33 – $168
System affiliation
Part of a system1,742$84$33 – $170
Independent348$76$38 – $144

Cash price vs list price

Median list price (chargemaster)$141
Median cash price$82
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

1,476 hospitals filed a usable inpatient cash price for this code. The median is $86 and the average of the middle 60% is $92; most fall between $38 and $175.

Cash price percentiles, inpatient, across 1,476 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
$26$45$86$153$234

The most expensive tenth of hospitals charges at least 9.0× what the cheapest tenth charges ($26 vs $234).

Of the 1,619 hospitals that filed this code inpatient, 1,476 gave a usable cash price; 72 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 71 a list price only.

How complete is this

2,090 of the 3,956 hospitals with a price file in our corpus (53%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,276 hospitals that filed this code at all gave us
Usable cash price — counted2,090
Cash price carrying a plausibility flag — shown on the compare tool, excluded here101
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded2
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded82
Hospitals that filed this code2,276

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 PHOSPHOLIPID PLTLT NEUTRALIZ.

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, “Platelet-based phospholipid neutralization clotting test (CPT 85597) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-85597-platelet-based-phospholipid-neutralization-clotting-test