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Procedure price report · Laboratory - Chemistry and Hematology

Oxalate test on urine or blood

CPT 83945the billing code this page is about

Measures the amount of oxalate, a compound linked to kidney stone formation, in a urine or blood sample.

Hospitals typically charge $51 cash for this outpatient procedure — the median across 2,839 hospitals that filed a usable cash price; the average of the middle 60% is $55. Most fall between $19 and $106 (20th–80th percentile).

Hospitals
2,839
States
50
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 2,839 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
$14$24$51$95$157

The most expensive tenth of hospitals charges at least 12× what the cheapest tenth charges ($14 vs $157).

How the prices are spread

$9 – $12: 76 hospitals$9$12 – $16: 215 hospitals$16 – $22: 239 hospitals$16$22 – $31: 239 hospitals$31 – $43: 305 hospitals$31$43 – $59: 372 hospitals$59 – $82: 374 hospitals$59$82 – $113: 356 hospitals$113 – $156: 235 hospitals$113$156 – $215: 147 hospitals$156median $51price bands are equal on a log scale
Hospitals per price band (2,558 of 2,839 — the bands cover the 5th to 95th percentile)
FromToHospitals
$9$1276
$12$16215
$16$22239
$22$31239
$31$43305
$43$59372
$59$82374
$82$113356
$113$156235
$156$215147

By state

The median cash price in each state, against the national median of $51.

Alaska: median $54 across 16 hospitalsAK$54Maine: median $61 across 26 hospitalsME$61Vermont: median $116 across 12 hospitalsVT$116New Hampshire: median $46 across 20 hospitalsNH$46Washington: median $64 across 62 hospitalsWA$64Idaho: median $44 across 19 hospitalsID$44Montana: median $84 across 22 hospitalsMT$84North Dakota: median $66 across 33 hospitalsND$66Minnesota: median $50 across 82 hospitalsMN$50Illinois: median $58 across 131 hospitalsIL$58Wisconsin: median $57 across 97 hospitalsWI$57Michigan: median $14 across 72 hospitalsMI$14New York: median $34 across 100 hospitalsNY$34Massachusetts: median $84 across 46 hospitalsMA$84Oregon: median $45 across 44 hospitalsOR$45Nevada: median $68 across 20 hospitalsNV$68Wyoming: median $78 across 13 hospitalsWY$78South Dakota: median $73 across 29 hospitalsSD$73Iowa: median $64 across 71 hospitalsIA$64Indiana: median $50 across 86 hospitalsIN$50Ohio: median $65 across 133 hospitalsOH$65Pennsylvania: median $56 across 117 hospitalsPA$56New Jersey: median $17 across 55 hospitalsNJ$17Connecticut: median $47 across 16 hospitalsCT$47Rhode Island: median $64 across 10 hospitalsRI$64California: median $17 across 114 hospitalsCA$17Utah: median $65 across 40 hospitalsUT$65Colorado: median $53 across 59 hospitalsCO$53Nebraska: median $108 across 59 hospitalsNE$108Missouri: median $51 across 72 hospitalsMO$51Kentucky: median $86 across 59 hospitalsKY$86West Virginia: median $29 across 34 hospitalsWV$29Virginia: median $64 across 63 hospitalsVA$64Maryland: median $40 across 33 hospitalsMD$40Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $79 across 38 hospitalsAZ$79New Mexico: median $73 across 21 hospitalsNM$73Kansas: median $72 across 63 hospitalsKS$72Arkansas: median $33 across 28 hospitalsAR$33Tennessee: median $29 across 70 hospitalsTN$29North Carolina: median $40 across 77 hospitalsNC$40South Carolina: median $63 across 46 hospitalsSC$63Oklahoma: median $38 across 60 hospitalsOK$38Louisiana: median $32 across 47 hospitalsLA$32Mississippi: median $39 across 48 hospitalsMS$39Alabama: median $24 across 30 hospitalsAL$24Georgia: median $62 across 93 hospitalsGA$62Hawaii: median $84 across 12 hospitalsHI$84Texas: median $55 across 206 hospitalsTX$55Florida: median $14 across 128 hospitalsFL$14
Cash price by state, most expensive first. National median $51. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Vermont VT12$116+128%$56 – $239
Nebraska NE59$108+112%$38 – $173
Kentucky KY59$86+68%$29 – $175
Hawaii HI12$84+65%$26 – $133
Massachusetts MA46$84+65%$41 – $116
Montana MT22$84+65%$44 – $108
Arizona AZ38$79+54%$20 – $127
Wyoming WY13$78+52%$41 – $129
New Mexico NM21$73+43%$61 – $113
South Dakota SD29$73+43%$38 – $128
Kansas KS63$72+41%$51 – $116
Nevada NV20$68+33%$32 – $108
North Dakota ND33$66+29%$8 – $103
Utah UT40$65+28%$58 – $182
Ohio OH133$65+27%$31 – $96
Iowa IA71$64+26%$48 – $112
Virginia VA63$64+25%$22 – $114
Washington WA62$64+25%$39 – $127
Rhode Island RI10$64+25%$30 – $103
South Carolina SC46$63+24%$41 – $97
Georgia GA93$62+22%$26 – $137
Maine ME26$61+20%$33 – $101
Illinois IL131$58+13%$32 – $125
Wisconsin WI97$57+11%$30 – $86
Pennsylvania PA117$56+10%$17 – $170
Texas TX206$55+7%$16 – $174
Alaska AK16$54+5%$17 – $123
Colorado CO59$53+4%$26 – $121
Missouri MO72$510%$31 – $90
Indiana IN86$50−1%$23 – $120
Minnesota MN82$50−3%$19 – $100
Connecticut CT16$47−7%$33 – $67
New Hampshire NH20$46−11%$24 – $147
Oregon OR44$45−12%$18 – $96
Idaho ID19$44−14%$13 – $76
North Carolina NC77$40−22%$20 – $124
Maryland MD33$40−22%$30 – $47
Mississippi MS48$39−23%$19 – $74
Oklahoma OK60$38−25%$32 – $95
New York NY100$34−34%$14 – $83
Arkansas AR28$33−35%$16 – $68
Louisiana LA47$32−38%$12 – $81
West Virginia WV34$29−43%$8 – $60
Tennessee TN70$29−44%$22 – $82
Alabama AL30$24−53%$16 – $92
California CA114$17−67%$8 – $40
New Jersey NJ55$17−67%$14 – $38
Michigan MI72$14−73%$7 – $37
Florida FL128$14−73%$8 – $95
Delaware DE7not 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 $51.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care2,032$45$17 – $103
Children’s49$38$24 – $110
Critical access749$65$33 – $116
Ownership
For-profit381$64$19 – $207
Government494$51$20 – $104
Non-profit1,955$49$20 – $100
System affiliation
Part of a system2,329$50$19 – $107
Independent510$54$24 – $104

Cash price vs list price

Median list price (chargemaster)$87
Median cash price$51
Cash as a share of list, median hospital65%

At the typical hospital, asking for the cash price cuts the list price by about 35%. 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

1,936 hospitals filed a usable inpatient cash price for this code. The median is $51 and the average of the middle 60% is $54; most fall between $20 and $100.

Cash price percentiles, inpatient, across 1,936 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
$14$25$51$91$134

The most expensive tenth of hospitals charges at least 9.4× what the cheapest tenth charges ($14 vs $134).

Of the 2,140 hospitals that filed this code inpatient, 1,936 gave a usable cash price; 107 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 97 a list price only.

How complete is this

2,839 of the 3,956 hospitals with a price file in our corpus (72%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 3,096 hospitals that filed this code at all gave us
Usable cash price — counted2,839
Cash price carrying a plausibility flag — shown on the compare tool, excluded here145
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 — excluded112
Hospitals that filed this code3,096

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 Oxalate, Plasma.

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, “Oxalate test on urine or blood (CPT 83945) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-83945-oxalate-test-on-urine-or-blood