HRHospitalRates.comCompare prices

Procedure price report · Laboratory - Chemistry and Hematology

Thyroid stimulating immunoglobulin blood test

CPT 84445the billing code this page is about

A blood test that measures antibodies that stimulate the thyroid gland.

Hospitals typically charge $177 cash for this outpatient procedure — the median across 3,171 hospitals that filed a usable cash price; the average of the middle 60% is $191. Most fall between $73 and $382 (20th–80th percentile).

Hospitals
3,171
States
50
Filings dated
Dec 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 3,171 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
$49$89$177$328$562

The most expensive tenth of hospitals charges at least 11× what the cheapest tenth charges ($49 vs $562).

How the prices are spread

$34 – $46: 134 hospitals$34$46 – $63: 249 hospitals$63 – $87: 236 hospitals$63$87 – $119: 381 hospitals$119 – $164: 306 hospitals$119$164 – $225: 439 hospitals$225 – $309: 420 hospitals$225$309 – $425: 333 hospitals$425 – $583: 220 hospitals$425$583 – $801: 137 hospitals$583median $177price bands are equal on a log scale
Hospitals per price band (2,855 of 3,171 — the bands cover the 5th to 95th percentile)
FromToHospitals
$34$46134
$46$63249
$63$87236
$87$119381
$119$164306
$164$225439
$225$309420
$309$425333
$425$583220
$583$801137

By state

The median cash price in each state, against the national median of $177.

Alaska: median $179 across 18 hospitalsAK$179Maine: median $159 across 28 hospitalsME$159Vermont: median $468 across 14 hospitalsVT$468New Hampshire: median $253 across 25 hospitalsNH$253Washington: median $240 across 73 hospitalsWA$240Idaho: median $167 across 21 hospitalsID$167Montana: median $244 across 29 hospitalsMT$244North Dakota: median $258 across 30 hospitalsND$258Minnesota: median $175 across 98 hospitalsMN$175Illinois: median $235 across 139 hospitalsIL$235Wisconsin: median $220 across 103 hospitalsWI$220Michigan: median $73 across 82 hospitalsMI$73New York: median $125 across 113 hospitalsNY$125Massachusetts: median $269 across 52 hospitalsMA$269Oregon: median $156 across 47 hospitalsOR$156Nevada: median $245 across 20 hospitalsNV$245Wyoming: median $167 across 16 hospitalsWY$167South Dakota: median $307 across 33 hospitalsSD$307Iowa: median $183 across 87 hospitalsIA$183Indiana: median $232 across 97 hospitalsIN$232Ohio: median $157 across 138 hospitalsOH$157Pennsylvania: median $211 across 121 hospitalsPA$211New Jersey: median $58 across 57 hospitalsNJ$58Connecticut: median $220 across 21 hospitalsCT$220Rhode Island: median $319 across 10 hospitalsRI$319California: median $57 across 118 hospitalsCA$57Utah: median $282 across 41 hospitalsUT$282Colorado: median $252 across 64 hospitalsCO$252Nebraska: median $339 across 80 hospitalsNE$339Missouri: median $204 across 73 hospitalsMO$204Kentucky: median $282 across 67 hospitalsKY$282West Virginia: median $195 across 41 hospitalsWV$195Virginia: median $167 across 70 hospitalsVA$167Maryland: median $68 across 41 hospitalsMD$68Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $229 across 39 hospitalsAZ$229New Mexico: median $211 across 20 hospitalsNM$211Kansas: median $456 across 82 hospitalsKS$456Arkansas: median $122 across 36 hospitalsAR$122Tennessee: median $99 across 79 hospitalsTN$99North Carolina: median $115 across 83 hospitalsNC$115South Carolina: median $221 across 53 hospitalsSC$221Oklahoma: median $154 across 66 hospitalsOK$154Louisiana: median $89 across 50 hospitalsLA$89Mississippi: median $121 across 55 hospitalsMS$121Alabama: median $159 across 41 hospitalsAL$159Georgia: median $96 across 98 hospitalsGA$96Hawaii: median $209 across 17 hospitalsHI$209Texas: median $213 across 233 hospitalsTX$213Florida: median $43 across 145 hospitalsFL$43
Cash price by state, most expensive first. National median $177. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Vermont VT14$468+165%$269 – $781
Kansas KS82$456+158%$200 – $698
Nebraska NE80$339+92%$123 – $501
Rhode Island RI10$319+80%$118 – $406
South Dakota SD33$307+74%$124 – $668
Utah UT41$282+60%$233 – $375
Kentucky KY67$282+59%$108 – $568
Massachusetts MA52$269+52%$160 – $451
North Dakota ND30$258+46%$89 – $405
New Hampshire NH25$253+43%$57 – $309
Colorado CO64$252+42%$110 – $385
Nevada NV20$245+39%$56 – $378
Montana MT29$244+38%$169 – $369
Washington WA73$240+35%$163 – $366
Illinois IL139$235+33%$109 – $485
Indiana IN97$232+31%$100 – $465
Arizona AZ39$229+29%$72 – $516
South Carolina SC53$221+25%$152 – $404
Wisconsin WI103$220+24%$110 – $287
Connecticut CT21$220+24%$149 – $424
Texas TX233$213+20%$95 – $640
New Mexico NM20$211+19%$148 – $391
Pennsylvania PA121$211+19%$58 – $598
Hawaii HI17$209+18%$116 – $286
Missouri MO73$204+15%$117 – $342
West Virginia WV41$195+10%$41 – $323
Iowa IA87$183+3%$109 – $275
Alaska AK18$179+1%$119 – $399
Minnesota MN98$175−1%$97 – $367
Idaho ID21$167−5%$51 – $265
Wyoming WY16$167−6%$98 – $368
Virginia VA70$167−6%$58 – $418
Maine ME28$159−10%$79 – $484
Alabama AL41$159−10%$70 – $506
Ohio OH138$157−11%$96 – $308
Oregon OR47$156−12%$62 – $246
Oklahoma OK66$154−13%$87 – $268
New York NY113$125−29%$51 – $304
Arkansas AR36$122−31%$67 – $203
Mississippi MS55$121−32%$62 – $195
North Carolina NC83$115−35%$85 – $291
Tennessee TN79$99−44%$66 – $255
Georgia GA98$96−46%$83 – $381
Louisiana LA50$89−50%$49 – $238
Michigan MI82$73−59%$41 – $129
Maryland MD41$68−62%$53 – $81
New Jersey NJ57$58−67%$51 – $172
California CA118$57−68%$29 – $174
Florida FL145$43−76%$27 – $178
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 $177.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care2,192$164$61 – $350
Children’s62$146$94 – $330
Critical access907$223$108 – $420
Ownership
For-profit429$207$67 – $754
Government585$178$80 – $368
Non-profit2,147$176$70 – $352
System affiliation
Part of a system2,577$177$70 – $378
Independent594$192$84 – $392

Cash price vs list price

Median list price (chargemaster)$305
Median cash price$177
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

2,123 hospitals filed a usable inpatient cash price for this code. The median is $179 and the average of the middle 60% is $188; most fall between $79 and $349.

Cash price percentiles, inpatient, across 2,123 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
$52$91$179$307$509

The most expensive tenth of hospitals charges at least 9.7× what the cheapest tenth charges ($52 vs $509).

Of the 2,342 hospitals that filed this code inpatient, 2,123 gave a usable cash price; 109 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 110 a list price only.

How complete is this

3,171 of the 3,956 hospitals with a price file in our corpus (80%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 3,453 hospitals that filed this code at all gave us
Usable cash price — counted3,171
Cash price carrying a plausibility flag — shown on the compare tool, excluded here151
A number the filing itself marks as not a price (a placeholder, a ratio) — excluded1
An estimate rather than a filed cash price — excluded1
A list price only, no cash figure — excluded129
Hospitals that filed this code3,453

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 Thyroid Stim Immun(Tsi).

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, “Thyroid stimulating immunoglobulin blood test (CPT 84445) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-84445-thyroid-stimulating-immunoglobulin-blood-test