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Procedure price report · Nonoperative urinary system measurements

Single amino acid measurement, per specimen

CPT 82131the billing code this page is about

Laboratory test that measures the amount of one specified amino acid, such as cystine, in a specimen; billed once for each specimen tested.

Hospitals typically charge $93 cash for this outpatient procedure — the median across 2,025 hospitals that filed a usable cash price; the average of the middle 60% is $99. Most fall between $38 and $200 (20th–80th percentile).

Hospitals
2,025
States
49
Filings dated
Aug 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 2,025 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
$25$46$93$173$303

The most expensive tenth of hospitals charges at least 12× what the cheapest tenth charges ($25 vs $303).

How the prices are spread

$18 – $25: 90 hospitals$18$25 – $35: 168 hospitals$35 – $49: 170 hospitals$35$49 – $68: 238 hospitals$68 – $95: 279 hospitals$68$95 – $134: 311 hospitals$134 – $187: 215 hospitals$134$187 – $262: 198 hospitals$262 – $367: 98 hospitals$262$367 – $514: 56 hospitals$367median $93price bands are equal on a log scale
Hospitals per price band (1,823 of 2,025 — the bands cover the 5th to 95th percentile)
FromToHospitals
$18$2590
$25$35168
$35$49170
$49$68238
$68$95279
$95$134311
$134$187215
$187$262198
$262$36798
$367$51456

By state

The median cash price in each state, against the national median of $93.

Alaska: 9 hospitals filed a usable price — fewer than 10, so no figureAKMaine: median $87 across 17 hospitalsME$87Vermont: no hospital in the corpus filed a usable priceVTNew Hampshire: median $57 across 12 hospitalsNH$57Washington: median $97 across 46 hospitalsWA$97Idaho: median $86 across 13 hospitalsID$86Montana: median $167 across 10 hospitalsMT$167North Dakota: median $107 across 17 hospitalsND$107Minnesota: median $111 across 23 hospitalsMN$111Illinois: median $112 across 111 hospitalsIL$112Wisconsin: median $121 across 79 hospitalsWI$121Michigan: median $69 across 52 hospitalsMI$69New York: median $67 across 80 hospitalsNY$67Massachusetts: median $89 across 33 hospitalsMA$89Oregon: median $95 across 31 hospitalsOR$95Nevada: median $113 across 17 hospitalsNV$113Wyoming: 9 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: 6 hospitals filed a usable price — fewer than 10, so no figureSDIowa: median $64 across 27 hospitalsIA$64Indiana: median $52 across 61 hospitalsIN$52Ohio: median $105 across 120 hospitalsOH$105Pennsylvania: median $96 across 100 hospitalsPA$96New Jersey: median $25 across 43 hospitalsNJ$25Connecticut: median $98 across 12 hospitalsCT$98Rhode Island: 9 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $63 across 65 hospitalsCA$63Utah: median $789 across 37 hospitalsUT$789Colorado: median $136 across 48 hospitalsCO$136Nebraska: median $146 across 40 hospitalsNE$146Missouri: median $74 across 57 hospitalsMO$74Kentucky: median $92 across 52 hospitalsKY$92West Virginia: median $81 across 22 hospitalsWV$81Virginia: median $74 across 49 hospitalsVA$74Maryland: median $131 across 18 hospitalsMD$131Delaware: 2 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $51 across 24 hospitalsAZ$51New Mexico: median $144 across 10 hospitalsNM$144Kansas: median $246 across 32 hospitalsKS$246Arkansas: median $60 across 23 hospitalsAR$60Tennessee: median $36 across 41 hospitalsTN$36North Carolina: median $129 across 67 hospitalsNC$129South Carolina: median $101 across 40 hospitalsSC$101Oklahoma: median $67 across 43 hospitalsOK$67Louisiana: median $59 across 33 hospitalsLA$59Mississippi: median $53 across 36 hospitalsMS$53Alabama: median $51 across 18 hospitalsAL$51Georgia: median $106 across 75 hospitalsGA$106Hawaii: median $98 across 12 hospitalsHI$98Texas: median $173 across 156 hospitalsTX$173Florida: median $42 across 88 hospitalsFL$42
Cash price by state, most expensive first. National median $93. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Utah UT37$789+752%$138 – $929
Kansas KS32$246+165%$116 – $450
Texas TX156$173+87%$68 – $293
Montana MT10$167+80%$76 – $262
Nebraska NE40$146+58%$50 – $299
New Mexico NM10$144+56%$40 – $183
Colorado CO48$136+47%$90 – $440
Maryland MD18$131+41%$52 – $192
North Carolina NC67$129+39%$33 – $226
Wisconsin WI79$121+31%$69 – $196
Nevada NV17$113+22%$44 – $140
Illinois IL111$112+21%$50 – $272
Minnesota MN23$111+20%$80 – $191
North Dakota ND17$107+15%$69 – $171
Georgia GA75$106+14%$37 – $144
Ohio OH120$105+13%$70 – $214
South Carolina SC40$101+9%$62 – $132
Hawaii HI12$98+6%$68 – $154
Connecticut CT12$98+6%$74 – $113
Washington WA46$97+5%$52 – $143
Pennsylvania PA100$96+4%$26 – $208
Oregon OR31$95+3%$70 – $200
Kentucky KY52$92−1%$52 – $189
Massachusetts MA33$89−4%$51 – $197
Maine ME17$87−6%$45 – $174
Idaho ID13$86−7%$76 – $304
West Virginia WV22$81−13%$69 – $172
Virginia VA49$74−20%$14 – $197
Missouri MO57$74−21%$60 – $170
Michigan MI52$69−26%$15 – $125
New York NY80$67−28%$27 – $153
Oklahoma OK43$67−28%$38 – $221
Iowa IA27$64−31%$45 – $146
California CA65$63−32%$26 – $65
Arkansas AR23$60−35%$25 – $95
Louisiana LA33$59−36%$34 – $114
New Hampshire NH12$57−39%$32 – $365
Mississippi MS36$53−43%$26 – $79
Indiana IN61$52−44%$29 – $175
Alabama AL18$51−45%$17 – $119
Arizona AZ24$51−45%$26 – $161
Florida FL88$42−55%$22 – $95
Tennessee TN41$36−61%$30 – $87
New Jersey NJ43$25−73%$23 – $50
Alaska AK9not enough hospitals filed a usable price
Rhode Island RI9not enough hospitals filed a usable price
Wyoming WY9not enough hospitals filed a usable price
South Dakota SD6not enough hospitals filed a usable price
Delaware DE2not 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 $93.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care1,538$84$34 – $192
Children’s55$135$84 – $222
Critical access427$112$52 – $222
Ownership
For-profit287$112$41 – $339
Government306$85$35 – $186
Non-profit1,427$92$39 – $191
System affiliation
Part of a system1,688$93$37 – $206
Independent337$90$41 – $188

Cash price vs list price

Median list price (chargemaster)$158
Median cash price$93
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

1,403 hospitals filed a usable inpatient cash price for this code. The median is $98 and the average of the middle 60% is $105; most fall between $44 and $202.

Cash price percentiles, inpatient, across 1,403 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
$27$52$98$180$292

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($27 vs $292).

Of the 1,563 hospitals that filed this code inpatient, 1,403 gave a usable cash price; 84 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 76 a list price only.

How complete is this

2,025 of the 3,956 hospitals with a price file in our corpus (51%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,224 hospitals that filed this code at all gave us
Usable cash price — counted2,025
Cash price carrying a plausibility flag — shown on the compare tool, excluded here113
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded1
An estimate rather than a filed cash price — excluded0
A list price only, no cash figure — excluded85
Hospitals that filed this code2,224

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 Nonoperative urinary system measurements family.

Hospitals file this code under descriptions such as HC Cystinuria Pro,Quant, 24 Hour.

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, “Single amino acid measurement, per specimen (CPT 82131) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-82131-single-amino-acid-measurement-per-specimen