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Procedure price report · Laboratory - Chemistry and Hematology

Immunoassay blood test, not otherwise specified

CPT 83520the billing code this page is about

A quantitative antibody-based laboratory measurement of a substance that has no specific code of its own; here used to measure thyroid-stimulating hormone receptor antibodies.

Hospitals typically charge $49 cash for this outpatient procedure — the median across 3,306 hospitals that filed a usable cash price; the average of the middle 60% is $56. Most fall between $21 and $118 (20th–80th percentile).

Hospitals
3,306
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 3,306 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$49$100$186

The most expensive tenth of hospitals charges at least 13× what the cheapest tenth charges ($14 vs $186).

How the prices are spread

$10 – $13: 151 hospitals$10$13 – $19: 224 hospitals$19 – $26: 282 hospitals$19$26 – $36: 407 hospitals$36 – $50: 442 hospitals$36$50 – $69: 394 hospitals$69 – $97: 389 hospitals$69$97 – $134: 292 hospitals$134 – $187: 237 hospitals$134$187 – $260: 163 hospitals$187median $49price bands are equal on a log scale
Hospitals per price band (2,981 of 3,306 — the bands cover the 5th to 95th percentile)
FromToHospitals
$10$13151
$13$19224
$19$26282
$26$36407
$36$50442
$50$69394
$69$97389
$97$134292
$134$187237
$187$260163

By state

The median cash price in each state, against the national median of $49.

Alaska: median $80 across 19 hospitalsAK$80Maine: median $54 across 28 hospitalsME$54Vermont: median $86 across 14 hospitalsVT$86New Hampshire: median $73 across 24 hospitalsNH$73Washington: median $66 across 76 hospitalsWA$66Idaho: median $50 across 24 hospitalsID$50Montana: median $65 across 33 hospitalsMT$65North Dakota: median $67 across 35 hospitalsND$67Minnesota: median $46 across 104 hospitalsMN$46Illinois: median $80 across 145 hospitalsIL$80Wisconsin: median $71 across 104 hospitalsWI$71Michigan: median $19 across 90 hospitalsMI$19New York: median $37 across 117 hospitalsNY$37Massachusetts: median $74 across 54 hospitalsMA$74Oregon: median $43 across 48 hospitalsOR$43Nevada: median $85 across 20 hospitalsNV$85Wyoming: median $42 across 16 hospitalsWY$42South Dakota: median $81 across 41 hospitalsSD$81Iowa: median $73 across 89 hospitalsIA$73Indiana: median $47 across 98 hospitalsIN$47Ohio: median $71 across 139 hospitalsOH$71Pennsylvania: median $48 across 120 hospitalsPA$48New Jersey: median $20 across 57 hospitalsNJ$20Connecticut: median $74 across 23 hospitalsCT$74Rhode Island: median $52 across 10 hospitalsRI$52California: median $15 across 132 hospitalsCA$15Utah: median $79 across 41 hospitalsUT$79Colorado: median $35 across 67 hospitalsCO$35Nebraska: median $95 across 78 hospitalsNE$95Missouri: median $54 across 73 hospitalsMO$54Kentucky: median $45 across 67 hospitalsKY$45West Virginia: median $27 across 42 hospitalsWV$27Virginia: median $68 across 73 hospitalsVA$68Maryland: median $41 across 37 hospitalsMD$41Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $89 across 41 hospitalsAZ$89New Mexico: median $101 across 29 hospitalsNM$101Kansas: median $54 across 86 hospitalsKS$54Arkansas: median $23 across 39 hospitalsAR$23Tennessee: median $26 across 81 hospitalsTN$26North Carolina: median $51 across 88 hospitalsNC$51South Carolina: median $102 across 53 hospitalsSC$102Oklahoma: median $45 across 73 hospitalsOK$45Louisiana: median $23 across 51 hospitalsLA$23Mississippi: median $24 across 55 hospitalsMS$24Alabama: median $43 across 45 hospitalsAL$43Georgia: median $58 across 109 hospitalsGA$58Hawaii: median $84 across 18 hospitalsHI$84Texas: median $58 across 243 hospitalsTX$58Florida: median $17 across 150 hospitalsFL$17
Cash price by state, most expensive first. National median $49. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
South Carolina SC53$102+107%$35 – $164
New Mexico NM29$101+104%$48 – $247
Nebraska NE78$95+93%$42 – $202
Arizona AZ41$89+80%$24 – $185
Vermont VT14$86+75%$48 – $188
Nevada NV20$85+72%$25 – $111
Hawaii HI18$84+70%$34 – $223
South Dakota SD41$81+63%$42 – $165
Illinois IL145$80+62%$31 – $198
Alaska AK19$80+62%$17 – $197
Utah UT41$79+59%$67 – $88
Massachusetts MA54$74+51%$35 – $117
Connecticut CT23$74+50%$30 – $130
New Hampshire NH24$73+48%$30 – $191
Iowa IA89$73+48%$46 – $135
Ohio OH139$71+44%$35 – $124
Wisconsin WI104$71+44%$28 – $116
Virginia VA73$68+38%$22 – $191
North Dakota ND35$67+35%$30 – $114
Washington WA76$66+35%$28 – $132
Montana MT33$65+31%$38 – $133
Texas TX243$58+18%$37 – $134
Georgia GA109$58+18%$31 – $106
Missouri MO73$54+10%$28 – $120
Maine ME28$54+10%$14 – $145
Kansas KS86$54+9%$32 – $104
Rhode Island RI10$52+6%$21 – $104
North Carolina NC88$51+4%$30 – $203
Idaho ID24$50+2%$27 – $102
Pennsylvania PA120$48−3%$20 – $135
Indiana IN98$47−5%$27 – $95
Minnesota MN104$46−8%$20 – $118
Kentucky KY67$45−8%$30 – $97
Oklahoma OK73$45−9%$17 – $130
Alabama AL45$43−12%$16 – $225
Oregon OR48$43−13%$22 – $85
Wyoming WY16$42−14%$32 – $111
Maryland MD37$41−16%$28 – $66
New York NY117$37−26%$17 – $74
Colorado CO67$35−28%$13 – $92
West Virginia WV42$27−45%$20 – $73
Tennessee TN81$26−47%$12 – $73
Mississippi MS55$24−52%$16 – $74
Arkansas AR39$23−53%$13 – $40
Louisiana LA51$23−54%$12 – $58
New Jersey NJ57$20−60%$17 – $67
Michigan MI90$19−61%$9 – $41
Florida FL150$17−65%$10 – $52
California CA132$15−70%$7 – $31
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 $49.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care2,270$42$18 – $105
Children’s65$63$22 – $99
Critical access961$66$31 – $138
Ownership
For-profit459$53$17 – $157
Government625$55$23 – $124
Non-profit2,212$47$21 – $109
System affiliation
Part of a system2,681$49$20 – $118
Independent625$52$24 – $118

Cash price vs list price

Median list price (chargemaster)$79
Median cash price$49
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

2,216 hospitals filed a usable inpatient cash price for this code. The median is $49 and the average of the middle 60% is $55; most fall between $21 and $118.

Cash price percentiles, inpatient, across 2,216 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$27$49$97$187

The most expensive tenth of hospitals charges at least 14× what the cheapest tenth charges ($14 vs $187).

Of the 2,445 hospitals that filed this code inpatient, 2,216 gave a usable cash price; 116 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 113 a list price only.

How complete is this

3,306 of the 3,956 hospitals with a price file in our corpus (84%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 3,599 hospitals that filed this code at all gave us
Usable cash price — counted3,306
Cash price carrying a plausibility flag — shown on the compare tool, excluded here157
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 — excluded135
Hospitals that filed this code3,599

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 Laboratory - Chemistry and Hematology family.

Hospitals file this code under descriptions such as HC Adalimumab Antibody Serum.

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, “Immunoassay blood test, not otherwise specified (CPT 83520) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-83520-immunoassay-blood-test-not-otherwise-specified