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Procedure price report · Laboratory - Chemistry and Hematology

Blood test for free hydroxyproline

CPT 83500the billing code this page is about

Measures the unbound (free) form of hydroxyproline, an amino acid found in collagen, in a specimen.

Hospitals typically charge $107 cash for this outpatient procedure — the median across 479 hospitals that filed a usable cash price; the average of the middle 60% is $114. Most fall between $34 and $230 (20th–80th percentile).

Hospitals
479
States
42
Filings dated
Feb 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 479 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
$23$40$107$203$342

The most expensive tenth of hospitals charges at least 15× what the cheapest tenth charges ($23 vs $342).

How the prices are spread

$22 – $30: 66 hospitals$22$30 – $41: 57 hospitals$41 – $56: 31 hospitals$41$56 – $77: 40 hospitals$77 – $106: 29 hospitals$77$106 – $145: 36 hospitals$145 – $198: 83 hospitals$145$198 – $272: 50 hospitals$272 – $372: 31 hospitals$272$372 – $509: 19 hospitals$372median $107price bands are equal on a log scale
Hospitals per price band (442 of 479 — the bands cover the 5th to 95th percentile)
FromToHospitals
$22$3066
$30$4157
$41$5631
$56$7740
$77$10629
$106$14536
$145$19883
$198$27250
$272$37231
$372$50919

By state

The median cash price in each state, against the national median of $107.

Alaska: no hospital in the corpus filed a usable priceAKMaine: 1 hospital 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: 8 hospitals filed a usable price — fewer than 10, so no figureWAIdaho: no hospital in the corpus filed a usable priceIDMontana: no hospital in the corpus filed a usable priceMTNorth Dakota: 1 hospital filed a usable price — fewer than 10, so no figureNDMinnesota: 1 hospital filed a usable price — fewer than 10, so no figureMNIllinois: median $107 across 28 hospitalsIL$107Wisconsin: 2 hospitals filed a usable price — fewer than 10, so no figureWIMichigan: median $31 across 14 hospitalsMI$31New York: median $42 across 39 hospitalsNY$42Massachusetts: 7 hospitals filed a usable price — fewer than 10, so no figureMAOregon: 7 hospitals filed a usable price — fewer than 10, so no figureORNevada: 5 hospitals filed a usable price — fewer than 10, so no figureNVWyoming: 5 hospitals filed a usable price — fewer than 10, so no figureWYSouth Dakota: no hospital in the corpus filed a usable priceSDIowa: median $58 across 12 hospitalsIA$58Indiana: median $122 across 19 hospitalsIN$122Ohio: 8 hospitals filed a usable price — fewer than 10, so no figureOHPennsylvania: median $26 across 30 hospitalsPA$26New Jersey: median $25 across 39 hospitalsNJ$25Connecticut: no hospital in the corpus filed a usable priceCTRhode Island: 4 hospitals filed a usable price — fewer than 10, so no figureRICalifornia: median $184 across 40 hospitalsCA$184Utah: no hospital in the corpus filed a usable priceUTColorado: median $171 across 12 hospitalsCO$171Nebraska: 2 hospitals filed a usable price — fewer than 10, so no figureNEMissouri: 3 hospitals filed a usable price — fewer than 10, so no figureMOKentucky: 8 hospitals filed a usable price — fewer than 10, so no figureKYWest Virginia: 2 hospitals filed a usable price — fewer than 10, so no figureWVVirginia: 9 hospitals filed a usable price — fewer than 10, so no figureVAMaryland: 9 hospitals filed a usable price — fewer than 10, so no figureMDDelaware: no hospital in the corpus filed a usable priceDEArizona: 5 hospitals filed a usable price — fewer than 10, so no figureAZNew Mexico: no hospital in the corpus filed a usable priceNMKansas: 7 hospitals filed a usable price — fewer than 10, so no figureKSArkansas: 1 hospital filed a usable price — fewer than 10, so no figureARTennessee: median $40 across 12 hospitalsTN$40North Carolina: median $256 across 12 hospitalsNC$256South Carolina: 5 hospitals filed a usable price — fewer than 10, so no figureSCOklahoma: median $40 across 13 hospitalsOK$40Louisiana: 4 hospitals filed a usable price — fewer than 10, so no figureLAMississippi: 9 hospitals filed a usable price — fewer than 10, so no figureMSAlabama: 5 hospitals filed a usable price — fewer than 10, so no figureALGeorgia: 9 hospitals filed a usable price — fewer than 10, so no figureGAHawaii: 3 hospitals filed a usable price — fewer than 10, so no figureHITexas: median $161 across 52 hospitalsTX$161Florida: median $46 across 25 hospitalsFL$46
Cash price by state, most expensive first. National median $107. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
North Carolina NC12$256+140%$256 – $272
California CA40$184+72%$184 – $230
Colorado CO12$171+60%$37 – $1,823
Texas TX52$161+51%$149 – $661
Indiana IN19$122+14%$37 – $204
Illinois IL28$1070%$37 – $338
Iowa IA12$58−46%$58 – $58
Florida FL25$46−57%$34 – $112
New York NY39$42−61%$23 – $197
Oklahoma OK13$40−63%$40 – $68
Tennessee TN12$40−63%$40 – $222
Michigan MI14$31−71%$27 – $97
Pennsylvania PA30$26−76%$16 – $149
New Jersey NJ39$25−77%$23 – $153
Georgia GA9not enough hospitals filed a usable price
Maryland MD9not enough hospitals filed a usable price
Mississippi MS9not enough hospitals filed a usable price
Virginia VA9not enough hospitals filed a usable price
Kentucky KY8not enough hospitals filed a usable price
Ohio OH8not enough hospitals filed a usable price
Washington WA8not enough hospitals filed a usable price
Kansas KS7not enough hospitals filed a usable price
Massachusetts MA7not enough hospitals filed a usable price
Oregon OR7not enough hospitals filed a usable price
Alabama AL5not enough hospitals filed a usable price
Arizona AZ5not enough hospitals filed a usable price
Nevada NV5not enough hospitals filed a usable price
South Carolina SC5not enough hospitals filed a usable price
Wyoming WY5not enough hospitals filed a usable price
Louisiana LA4not enough hospitals filed a usable price
Rhode Island RI4not enough hospitals filed a usable price
Hawaii HI3not enough hospitals filed a usable price
Missouri MO3not enough hospitals filed a usable price
Nebraska NE2not enough hospitals filed a usable price
Wisconsin WI2not enough hospitals filed a usable price
West Virginia WV2not enough hospitals filed a usable price
Arkansas AR1not enough hospitals filed a usable price
Maine ME1not enough hospitals filed a usable price
Minnesota MN1not enough hospitals filed a usable price
North Dakota ND1not enough hospitals filed a usable price
New Hampshire NH1not 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 $107.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care404$105$31 – $230
Children’s5fewer than 20 hospitals
Critical access70$145$54 – $234
Ownership
For-profit74$107$37 – $500
Government51$74$26 – $162
Non-profit354$107$33 – $230
System affiliation
Part of a system408$107$34 – $230
Independent71$96$34 – $232

Cash price vs list price

Median list price (chargemaster)$211
Median cash price$107
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

287 hospitals filed a usable inpatient cash price for this code. The median is $128 and the average of the middle 60% is $131; most fall between $46 and $230.

Cash price percentiles, inpatient, across 287 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
$37$53$128$200$293

The most expensive tenth of hospitals charges at least 7.9× what the cheapest tenth charges ($37 vs $293).

Of the 318 hospitals that filed this code inpatient, 287 gave a usable cash price; 24 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 7 a list price only.

How complete is this

479 of the 3,956 hospitals with a price file in our corpus (12%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 523 hospitals that filed this code at all gave us
Usable cash price — counted479
Cash price carrying a plausibility flag — shown on the compare tool, excluded here30
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 — excluded13
Hospitals that filed this code523

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 Hc Assay, Free Hydroxyproline.

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 free hydroxyproline (CPT 83500) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-83500-blood-test-for-free-hydroxyproline