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Procedure price report · Laboratory - Chemistry and Hematology

Blood or serum thickness (viscosity) test

CPT 85810the billing code this page is about

Laboratory measurement of how thick or resistant to flow a sample of blood or serum is; covers one test on one specimen.

Hospitals typically charge $51 cash for this outpatient procedure — the median across 2,587 hospitals that filed a usable cash price; the average of the middle 60% is $55. Most fall between $21 and $105 (20th–80th percentile).

Hospitals
2,587
States
50
Filings dated
Jan 2024 – 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 2,587 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$26$51$87$162

The most expensive tenth of hospitals charges at least 12× what the cheapest tenth charges ($14 vs $162).

How the prices are spread

$11 – $15: 218 hospitals$11$15 – $21: 157 hospitals$21 – $28: 207 hospitals$21$28 – $38: 257 hospitals$38 – $52: 348 hospitals$38$52 – $71: 315 hospitals$71 – $96: 383 hospitals$71$96 – $131: 211 hospitals$131 – $177: 143 hospitals$131$177 – $241: 94 hospitals$177median $51price bands are equal on a log scale
Hospitals per price band (2,333 of 2,587 — the bands cover the 5th to 95th percentile)
FromToHospitals
$11$15218
$15$21157
$21$28207
$28$38257
$38$52348
$52$71315
$71$96383
$96$131211
$131$177143
$177$24194

By state

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

Alaska: median $53 across 13 hospitalsAK$53Maine: median $70 across 25 hospitalsME$70Vermont: 9 hospitals filed a usable price — fewer than 10, so no figureVTNew Hampshire: median $94 across 20 hospitalsNH$94Washington: median $64 across 59 hospitalsWA$64Idaho: median $43 across 18 hospitalsID$43Montana: median $99 across 23 hospitalsMT$99North Dakota: median $56 across 17 hospitalsND$56Minnesota: median $70 across 76 hospitalsMN$70Illinois: median $73 across 121 hospitalsIL$73Wisconsin: median $82 across 92 hospitalsWI$82Michigan: median $34 across 81 hospitalsMI$34New York: median $42 across 101 hospitalsNY$42Massachusetts: median $57 across 44 hospitalsMA$57Oregon: median $47 across 39 hospitalsOR$47Nevada: median $42 across 16 hospitalsNV$42Wyoming: median $39 across 12 hospitalsWY$39South Dakota: median $97 across 11 hospitalsSD$97Iowa: median $55 across 60 hospitalsIA$55Indiana: median $53 across 83 hospitalsIN$53Ohio: median $48 across 121 hospitalsOH$48Pennsylvania: median $59 across 114 hospitalsPA$59New Jersey: median $13 across 52 hospitalsNJ$13Connecticut: median $67 across 17 hospitalsCT$67Rhode Island: median $43 across 10 hospitalsRI$43California: median $27 across 111 hospitalsCA$27Utah: median $43 across 33 hospitalsUT$43Colorado: median $66 across 51 hospitalsCO$66Nebraska: median $81 across 46 hospitalsNE$81Missouri: median $62 across 61 hospitalsMO$62Kentucky: median $75 across 45 hospitalsKY$75West Virginia: median $31 across 30 hospitalsWV$31Virginia: median $44 across 67 hospitalsVA$44Maryland: median $66 across 38 hospitalsMD$66Delaware: 6 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $68 across 36 hospitalsAZ$68New Mexico: median $95 across 17 hospitalsNM$95Kansas: median $71 across 51 hospitalsKS$71Arkansas: median $52 across 20 hospitalsAR$52Tennessee: median $39 across 65 hospitalsTN$39North Carolina: median $54 across 74 hospitalsNC$54South Carolina: median $47 across 47 hospitalsSC$47Oklahoma: median $43 across 49 hospitalsOK$43Louisiana: median $31 across 40 hospitalsLA$31Mississippi: median $28 across 37 hospitalsMS$28Alabama: median $57 across 34 hospitalsAL$57Georgia: median $50 across 77 hospitalsGA$50Hawaii: median $59 across 12 hospitalsHI$59Texas: median $62 across 183 hospitalsTX$62Florida: median $16 across 123 hospitalsFL$16
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
Montana MT23$99+95%$43 – $182
South Dakota SD11$97+91%$57 – $120
New Mexico NM17$95+87%$39 – $138
New Hampshire NH20$94+86%$46 – $220
Wisconsin WI92$82+61%$50 – $114
Nebraska NE46$81+59%$45 – $170
Kentucky KY45$75+47%$26 – $147
Illinois IL121$73+44%$38 – $132
Kansas KS51$71+40%$36 – $121
Maine ME25$70+37%$28 – $114
Minnesota MN76$70+37%$19 – $105
Arizona AZ36$68+33%$29 – $241
Connecticut CT17$67+31%$45 – $97
Maryland MD38$66+30%$52 – $81
Colorado CO51$66+30%$26 – $108
Washington WA59$64+27%$38 – $94
Missouri MO61$62+23%$41 – $88
Texas TX183$62+22%$22 – $169
Pennsylvania PA114$59+17%$18 – $137
Hawaii HI12$59+16%$29 – $131
Massachusetts MA44$57+12%$39 – $111
Alabama AL34$57+12%$22 – $197
North Dakota ND17$56+10%$49 – $81
Iowa IA60$55+9%$34 – $103
North Carolina NC74$54+7%$19 – $87
Alaska AK13$53+5%$28 – $172
Indiana IN83$53+4%$26 – $144
Arkansas AR20$52+3%$18 – $59
Georgia GA77$50−3%$24 – $85
Ohio OH121$48−5%$32 – $85
South Carolina SC47$47−8%$42 – $101
Oregon OR39$47−8%$24 – $58
Virginia VA67$44−13%$20 – $122
Idaho ID18$43−15%$14 – $65
Utah UT33$43−15%$43 – $51
Rhode Island RI10$43−15%$19 – $94
Oklahoma OK49$43−16%$25 – $73
New York NY101$42−17%$14 – $113
Nevada NV16$42−17%$18 – $112
Tennessee TN65$39−22%$20 – $73
Wyoming WY12$39−23%$36 – $125
Michigan MI81$34−33%$8 – $50
Louisiana LA40$31−39%$21 – $59
West Virginia WV30$31−39%$11 – $63
Mississippi MS37$28−44%$22 – $48
California CA111$27−47%$11 – $68
Florida FL123$16−68%$12 – $39
New Jersey NJ52$13−74%$13 – $59
Vermont VT9not enough hospitals filed a usable price
Delaware DE6not 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 care1,974$48$19 – $99
Children’s23$37$18 – $82
Critical access580$66$32 – $114
Ownership
For-profit364$54$16 – $193
Government392$53$25 – $98
Non-profit1,821$50$22 – $98
System affiliation
Part of a system2,186$51$21 – $106
Independent401$54$26 – $98

Cash price vs list price

Median list price (chargemaster)$89
Median cash price$51
Cash as a share of list, median hospital61%

At the typical hospital, asking for the cash price cuts the list price by about 39%. 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

1,812 hospitals filed a usable inpatient cash price for this code. The median is $51 and the average of the middle 60% is $55; most fall between $24 and $97.

Cash price percentiles, inpatient, across 1,812 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
$15$29$51$86$137

The most expensive tenth of hospitals charges at least 9.3× what the cheapest tenth charges ($15 vs $137).

Of the 2,002 hospitals that filed this code inpatient, 1,812 gave a usable cash price; 104 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 86 a list price only.

How complete is this

2,587 of the 3,956 hospitals with a price file in our corpus (65%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 2,823 hospitals that filed this code at all gave us
Usable cash price — counted2,587
Cash price carrying a plausibility flag — shown on the compare tool, excluded here138
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded0
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded97
Hospitals that filed this code2,823

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 Viscosity.

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 or serum thickness (viscosity) test (CPT 85810) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-85810-blood-or-serum-thickness-viscosity-test