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Procedure price report · Laboratory - Chemistry and Hematology

Blood test for antidiuretic hormone (vasopressin)

CPT 84588the billing code this page is about

Measures the level of vasopressin, the hormone that controls how much water the kidneys hold onto. Covers one measurement.

Hospitals typically charge $115 cash for this outpatient procedure — the median across 2,522 hospitals that filed a usable cash price; the average of the middle 60% is $123. Most fall between $49 and $240 (20th–80th percentile).

Hospitals
2,522
States
50
Filings dated
Nov 2023 – 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 2,522 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
$34$59$115$207$355

The most expensive tenth of hospitals charges at least 10× what the cheapest tenth charges ($34 vs $355).

How the prices are spread

$27 – $36: 142 hospitals$27$36 – $48: 227 hospitals$48 – $65: 212 hospitals$48$65 – $87: 258 hospitals$87 – $116: 305 hospitals$87$116 – $155: 349 hospitals$155 – $208: 283 hospitals$155$208 – $279: 242 hospitals$279 – $374: 152 hospitals$279$374 – $500: 100 hospitals$374median $115price bands are equal on a log scale
Hospitals per price band (2,270 of 2,522 — the bands cover the 5th to 95th percentile)
FromToHospitals
$27$36142
$36$48227
$48$65212
$65$87258
$87$116305
$116$155349
$155$208283
$208$279242
$279$374152
$374$500100

By state

The median cash price in each state, against the national median of $115.

Alaska: median $208 across 10 hospitalsAK$208Maine: median $173 across 19 hospitalsME$173Vermont: 9 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: median $198 across 15 hospitalsNH$198Washington: median $150 across 55 hospitalsWA$150Idaho: median $129 across 18 hospitalsID$129Montana: median $119 across 11 hospitalsMT$119North Dakota: median $143 across 22 hospitalsND$143Minnesota: median $158 across 77 hospitalsMN$158Illinois: median $150 across 118 hospitalsIL$150Wisconsin: median $170 across 94 hospitalsWI$170Michigan: median $57 across 60 hospitalsMI$57New York: median $89 across 90 hospitalsNY$89Massachusetts: median $124 across 38 hospitalsMA$124Oregon: median $103 across 36 hospitalsOR$103Nevada: median $109 across 15 hospitalsNV$109Wyoming: median $65 across 12 hospitalsWY$65South Dakota: 9 hospitals filed a usable price — fewer than 10, so no figureSDIowa: median $109 across 51 hospitalsIA$109Indiana: median $97 across 74 hospitalsIN$97Ohio: median $141 across 120 hospitalsOH$141Pennsylvania: median $131 across 84 hospitalsPA$131New Jersey: median $39 across 54 hospitalsNJ$39Connecticut: median $120 across 14 hospitalsCT$120Rhode Island: 9 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $41 across 104 hospitalsCA$41Utah: median $146 across 38 hospitalsUT$146Colorado: median $115 across 49 hospitalsCO$115Nebraska: median $150 across 44 hospitalsNE$150Missouri: median $121 across 63 hospitalsMO$121Kentucky: median $148 across 56 hospitalsKY$148West Virginia: median $50 across 32 hospitalsWV$50Virginia: median $160 across 66 hospitalsVA$160Maryland: median $69 across 35 hospitalsMD$69Delaware: 5 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $173 across 35 hospitalsAZ$173New Mexico: median $152 across 19 hospitalsNM$152Kansas: median $153 across 52 hospitalsKS$153Arkansas: median $94 across 24 hospitalsAR$94Tennessee: median $97 across 59 hospitalsTN$97North Carolina: median $131 across 78 hospitalsNC$131South Carolina: median $152 across 48 hospitalsSC$152Oklahoma: median $94 across 66 hospitalsOK$94Louisiana: median $99 across 45 hospitalsLA$99Mississippi: median $76 across 44 hospitalsMS$76Alabama: median $129 across 30 hospitalsAL$129Georgia: median $97 across 84 hospitalsGA$97Hawaii: median $207 across 13 hospitalsHI$207Texas: median $72 across 196 hospitalsTX$72Florida: median $38 across 123 hospitalsFL$38
Cash price by state, most expensive first. National median $115. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Alaska AK10$208+81%$108 – $341
Hawaii HI13$207+80%$151 – $389
New Hampshire NH15$198+72%$36 – $521
Maine ME19$173+51%$53 – $267
Arizona AZ35$173+51%$48 – $245
Wisconsin WI94$170+48%$112 – $365
Virginia VA66$160+39%$104 – $267
Minnesota MN77$158+37%$65 – $271
Kansas KS52$153+33%$92 – $224
South Carolina SC48$152+32%$102 – $207
New Mexico NM19$152+32%$58 – $226
Illinois IL118$150+30%$87 – $301
Washington WA55$150+30%$73 – $195
Nebraska NE44$150+30%$85 – $202
Kentucky KY56$148+28%$50 – $315
Utah UT38$146+26%$129 – $341
North Dakota ND22$143+25%$59 – $367
Ohio OH120$141+23%$85 – $220
North Carolina NC78$131+14%$50 – $240
Pennsylvania PA84$131+14%$39 – $360
Idaho ID18$129+12%$58 – $293
Alabama AL30$129+12%$50 – $271
Massachusetts MA38$124+8%$60 – $298
Missouri MO63$121+5%$68 – $220
Connecticut CT14$120+4%$91 – $181
Montana MT11$119+3%$65 – $201
Colorado CO49$1150%$57 – $223
Iowa IA51$109−5%$73 – $160
Nevada NV15$109−5%$49 – $211
Oregon OR36$103−10%$52 – $188
Louisiana LA45$99−14%$46 – $163
Georgia GA84$97−16%$68 – $250
Indiana IN74$97−16%$55 – $277
Tennessee TN59$97−16%$41 – $171
Oklahoma OK66$94−18%$66 – $163
Arkansas AR24$94−19%$45 – $159
New York NY90$89−22%$34 – $233
Mississippi MS44$76−34%$50 – $137
Texas TX196$72−38%$59 – $451
Maryland MD35$69−40%$52 – $81
Wyoming WY12$65−43%$58 – $185
Michigan MI60$57−51%$33 – $94
West Virginia WV32$50−57%$31 – $170
California CA104$41−64%$18 – $92
New Jersey NJ54$39−66%$37 – $115
Florida FL123$38−67%$25 – $113
Rhode Island RI9not enough hospitals filed a usable price
South Dakota SD9not enough hospitals filed a usable price
Vermont VT9not enough hospitals filed a usable price
Delaware DE5not 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 $115.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,854$104$43 – $233
Children’s52$164$68 – $302
Critical access607$138$73 – $247
Ownership
For-profit371$129$49 – $484
Government415$120$60 – $216
Non-profit1,727$110$48 – $220
System affiliation
Part of a system2,087$110$48 – $244
Independent435$125$61 – $219

Cash price vs list price

Median list price (chargemaster)$201
Median cash price$115
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

1,715 hospitals filed a usable inpatient cash price for this code. The median is $116 and the average of the middle 60% is $122; most fall between $56 and $220.

Cash price percentiles, inpatient, across 1,715 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
$39$63$116$196$310

The most expensive tenth of hospitals charges at least 7.9× what the cheapest tenth charges ($39 vs $310).

Of the 1,894 hospitals that filed this code inpatient, 1,715 gave a usable cash price; 94 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 85 a list price only.

How complete is this

2,522 of the 3,956 hospitals with a price file in our corpus (64%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,742 hospitals that filed this code at all gave us
Usable cash price — counted2,522
Cash price carrying a plausibility flag — shown on the compare tool, excluded here129
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 — excluded91
Hospitals that filed this code2,742

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 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 Laboratory - Chemistry and Hematology family.

Hospitals file this code under descriptions such as HC Antidiuretic Hormone.

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, “Blood test for antidiuretic hormone (vasopressin) (CPT 84588) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-84588-blood-test-for-antidiuretic-hormone-vasopressin