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Procedure price report · Laboratory - Chemistry and Hematology

Insulin-like growth factor 1 blood test

CPT 84305the billing code this page is about

Measures somatomedin, also called insulin-like growth factor 1, in a blood sample.

Hospitals typically charge $91 cash for this outpatient procedure — the median across 3,209 hospitals that filed a usable cash price; the average of the middle 60% is $101. Most fall between $36 and $199 (20th–80th percentile).

Hospitals
3,209
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 3,209 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$42$91$177$275

The most expensive tenth of hospitals charges at least 12× what the cheapest tenth charges ($23 vs $275).

How the prices are spread

$15 – $21: 116 hospitals$15$21 – $29: 251 hospitals$29 – $41: 260 hospitals$29$41 – $57: 354 hospitals$57 – $79: 350 hospitals$57$79 – $111: 345 hospitals$111 – $155: 440 hospitals$111$155 – $216: 419 hospitals$216 – $301: 264 hospitals$216$301 – $420: 111 hospitals$301median $91price bands are equal on a log scale
Hospitals per price band (2,910 of 3,209 — the bands cover the 5th to 95th percentile)
FromToHospitals
$15$21116
$21$29251
$29$41260
$41$57354
$57$79350
$79$111345
$111$155440
$155$216419
$216$301264
$301$420111

By state

The median cash price in each state, against the national median of $91.

Alaska: median $133 across 19 hospitalsAK$133Maine: median $76 across 28 hospitalsME$76Vermont: median $151 across 14 hospitalsVT$151New Hampshire: median $100 across 24 hospitalsNH$100Washington: median $104 across 73 hospitalsWA$104Idaho: median $83 across 23 hospitalsID$83Montana: median $105 across 28 hospitalsMT$105North Dakota: median $131 across 31 hospitalsND$131Minnesota: median $82 across 100 hospitalsMN$82Illinois: median $166 across 140 hospitalsIL$166Wisconsin: median $188 across 102 hospitalsWI$188Michigan: median $36 across 92 hospitalsMI$36New York: median $52 across 114 hospitalsNY$52Massachusetts: median $133 across 52 hospitalsMA$133Oregon: median $91 across 48 hospitalsOR$91Nevada: median $138 across 20 hospitalsNV$138Wyoming: median $83 across 16 hospitalsWY$83South Dakota: median $162 across 29 hospitalsSD$162Iowa: median $131 across 87 hospitalsIA$131Indiana: median $130 across 97 hospitalsIN$130Ohio: median $77 across 138 hospitalsOH$77Pennsylvania: median $106 across 121 hospitalsPA$106New Jersey: median $24 across 57 hospitalsNJ$24Connecticut: median $100 across 21 hospitalsCT$100Rhode Island: median $61 across 10 hospitalsRI$61California: median $37 across 138 hospitalsCA$37Utah: median $72 across 41 hospitalsUT$72Colorado: median $172 across 63 hospitalsCO$172Nebraska: median $178 across 77 hospitalsNE$178Missouri: median $149 across 73 hospitalsMO$149Kentucky: median $143 across 69 hospitalsKY$143West Virginia: median $43 across 42 hospitalsWV$43Virginia: median $130 across 72 hospitalsVA$130Maryland: median $41 across 41 hospitalsMD$41Delaware: 7 hospitals filed a usable price — fewer than 10, so no figureDEArizona: median $154 across 39 hospitalsAZ$154New Mexico: median $170 across 21 hospitalsNM$170Kansas: median $150 across 82 hospitalsKS$150Arkansas: median $36 across 36 hospitalsAR$36Tennessee: median $61 across 73 hospitalsTN$61North Carolina: median $66 across 85 hospitalsNC$66South Carolina: median $178 across 52 hospitalsSC$178Oklahoma: median $107 across 70 hospitalsOK$107Louisiana: median $68 across 50 hospitalsLA$68Mississippi: median $54 across 52 hospitalsMS$54Alabama: median $98 across 44 hospitalsAL$98Georgia: median $90 across 104 hospitalsGA$90Hawaii: median $133 across 17 hospitalsHI$133Texas: median $64 across 227 hospitalsTX$64Florida: median $25 across 150 hospitalsFL$25
Cash price by state, most expensive first. National median $91. A state needs at least 10 hospitals with a usable price to show a figure.
StateHospitalsMedianvs national20th–80th
Wisconsin WI102$188+106%$90 – $228
South Carolina SC52$178+95%$81 – $203
Nebraska NE77$178+95%$64 – $263
Colorado CO63$172+89%$60 – $231
New Mexico NM21$170+87%$98 – $228
Illinois IL140$166+82%$78 – $292
South Dakota SD29$162+78%$57 – $285
Arizona AZ39$154+69%$33 – $246
Vermont VT14$151+65%$67 – $291
Kansas KS82$150+65%$85 – $206
Missouri MO73$149+63%$77 – $205
Kentucky KY69$143+56%$53 – $268
Nevada NV20$138+52%$31 – $377
Massachusetts MA52$133+46%$62 – $191
Hawaii HI17$133+46%$53 – $294
Alaska AK19$133+45%$33 – $248
North Dakota ND31$131+44%$37 – $163
Iowa IA87$131+44%$55 – $165
Indiana IN97$130+43%$40 – $268
Virginia VA72$130+42%$36 – $270
Oklahoma OK70$107+17%$50 – $173
Pennsylvania PA121$106+17%$32 – $250
Montana MT28$105+15%$68 – $179
Washington WA73$104+14%$73 – $170
Connecticut CT21$100+10%$79 – $177
New Hampshire NH24$100+10%$32 – $228
Alabama AL44$98+8%$32 – $349
Oregon OR48$910%$64 – $135
Georgia GA104$90−1%$71 – $188
Wyoming WY16$83−9%$41 – $157
Idaho ID23$83−10%$25 – $138
Minnesota MN100$82−10%$41 – $188
Ohio OH138$77−15%$33 – $145
Maine ME28$76−16%$52 – $181
Utah UT41$72−21%$61 – $150
Louisiana LA50$68−26%$34 – $137
North Carolina NC85$66−27%$35 – $189
Texas TX227$64−30%$17 – $302
Tennessee TN73$61−33%$36 – $237
Rhode Island RI10$61−34%$49 – $135
Mississippi MS52$54−40%$37 – $158
New York NY114$52−43%$26 – $193
West Virginia WV42$43−53%$16 – $140
Maryland MD41$41−55%$32 – $49
California CA138$37−59%$11 – $147
Michigan MI92$36−61%$18 – $54
Arkansas AR36$36−61%$28 – $135
Florida FL150$25−72%$13 – $100
New Jersey NJ57$24−73%$23 – $89
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 $91.

Cash price by hospital segment. A segment needs at least 20 hospitals to show a figure.
SegmentHospitalsMedian20th–80th
Hospital type
Acute care2,226$77$29 – $193
Children’s62$119$50 – $195
Critical access911$127$56 – $206
Ownership
For-profit433$104$30 – $408
Government596$103$43 – $199
Non-profit2,170$88$35 – $186
System affiliation
Part of a system2,618$89$34 – $205
Independent591$103$45 – $189

Cash price vs list price

Median list price (chargemaster)$157
Median cash price$91
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

2,145 hospitals filed a usable inpatient cash price for this code. The median is $88 and the average of the middle 60% is $96; most fall between $36 and $188.

Cash price percentiles, inpatient, across 2,145 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
$24$42$88$163$250

The most expensive tenth of hospitals charges at least 10× what the cheapest tenth charges ($24 vs $250).

Of the 2,354 hospitals that filed this code inpatient, 2,145 gave a usable cash price; 105 carried a plausibility flag, 0 filed a number their own filing marks as not a price, 0 gave an estimate, and 104 a list price only.

How complete is this

3,209 of the 3,956 hospitals with a price file in our corpus (81%) filed a usable outpatient cash price for this code, and those are the hospitals every figure on this page is computed from.

What the 3,478 hospitals that filed this code at all gave us
Usable cash price — counted3,209
Cash price carrying a plausibility flag — shown on the compare tool, excluded here144
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 — excluded124
Hospitals that filed this code3,478

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 Somatomedin C.

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, “Insulin-like growth factor 1 blood test (CPT 84305) — cash price report,” computed September 25, 2026. https://hospitalrates.com/procedures/cpt-84305-insulin-like-growth-factor-1-blood-test