Lab tests CPT 84481 Inpatient — admitted to hospital

Free T3 test cost in Indianapolis, IN — inpatient

In Indianapolis-Carmel-Greenwood, IN, 12 hospitals list a cash price for free T3 thyroid hormone test as an inpatient: from $95.76 to $517.20, with a median of $517.20. The lowest listed price is at Rehabilitation Hospital Of Indiana — $421.44 less than the median here. Across Indiana, the median is $142.97 at 64 hospitals.

Cash prices at 12 facilities across 6 cities for code 84481, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between — and —.

Lowest$95.76Rehabilitation Hospital Of Indiana
Median$517.20half pay less
Highest$517.20in this market
Difference5.4×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Indianapolis-Carmel-Greenwood, IN.

median
Lowest $95.76Highest $517.20

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Rehabilitation Hospital Of Indiana lowest Indianapolis, IN T3, Free RHI $95.76 $168.00 $731.50–$3,209.00 43% —
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Rehabilitation Hospital Of Indiana lowest Indianapolis, IN T3, Free RHI $95.76 $168.00 — 43% —
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Riverview Health Noblesville, IN · (317) 773-0760 T3 FREE $103.80 $173.00 — 40% —
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Eskenazi Health Indianapolis, IN · (317) 880-4818 HC T3-Free Level $211.50 $235.00 $16.00–$235.00 10% —
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St. Vincent Anderson Regional Hospital Anderson, IN · (765) 649-2511 TRIIODOTHYRONINE T3; FREE $417.00 $695.00 $8.01–$38.62 40% —
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Ascension St Vincent Mercy Elwood, IN · (765) 552-4743 TRIIODOTHYRONINE T3; FREE $423.60 $706.00 $8.01–$38.62 40% —
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Carmel AmbSurg Carmel, IN TRIIODOTHYRONINE T3; FREE $517.20 $862.00 $8.01–$38.62 40% —
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Naab Road Surgery Center Indianapolis, IN TRIIODOTHYRONINE T3; FREE $517.20 $862.00 $8.01–$38.62 40% —
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St. Vincent Fishers Hospital Fishers, IN · (317) 415-9000 TRIIODOTHYRONINE T3; FREE $517.20 $862.00 $8.01–$38.62 40% —
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St. Vincent Carmel Hospital Carmel, IN · (317) 582-7000 TRIIODOTHYRONINE T3; FREE $517.20 $862.00 $8.01–$38.62 40% —
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St. Vincent Heart Center of Indiana Carmel, IN · (317) 583-5000 TRIIODOTHYRONINE T3; FREE $517.20 $862.00 $8.01–$38.62 40% —
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Endo Surgery Center Carmel, IN TRIIODOTHYRONINE T3; FREE $517.20 $862.00 $8.01–$38.62 40% —
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St. Vincent Seton Specialty Hospital Indianapolis, IN TRIIODOTHYRONINE T3; FREE $517.20 $862.00 $8.01–$38.62 40% —
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Inpatient: lowest $95.76, median $517.20, highest $517.20 — a 5.4× difference within the same market.

As an outpatient, the same code is billed by 15 facilities here, median $423.60 — that is the price to compare if you are not being admitted.

Cash or insurance?

At 2 of 11 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.

What it is

Free T3 is the active thyroid hormone not bound to proteins. It is usually checked after TSH (84443) and free T4 (84439), mainly when an overactive thyroid is suspected.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.