Free T4 test cost in Portland, OR
In Portland-Vancouver-Hillsboro, OR-WA, 15 hospitals list a cash price for free T4 (free thyroxine) thyroid blood test: from $6.38 to $117.00, with a median of $45.75. The lowest listed price is at Legacy Salmon Creek Medical Center and 4 other hospitals — $39.37 less than the median here. Across Oregon, the median is $44.25 at 39 hospitals.
Cash prices at 15 facilities across 9 cities for code 84439, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 23, 2026 and Apr 1, 2026.
Lowest$6.38Legacy Salmon Creek Medical Center + 4 more
Median$45.75half pay less
Highest$117.00in this market
Difference18.3×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 Portland-Vancouver-Hillsboro, OR-WA.
median
Lowest $6.38Highest $130.65
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Legacy Salmon Creek Medical Center lowest Vancouver, WA · (360) 487-1000 CHG ASSAY OF FREE THYROXINE | $6.38 | $9.82 | — | 35% | Apr 1, 2026 source file |
| Legacy Emanuel Medical Center lowest Portland, OR · (503) 413-2200 CHG ASSAY OF FREE THYROXINE | $6.38 | $9.82 | — | 35% | Apr 1, 2026 source file |
| Legacy Good Samaritan Medical Center lowest Portland, OR · (503) 413-7682 CHG ASSAY OF FREE THYROXINE | $6.38 | $9.82 | — | 35% | Apr 1, 2026 source file |
| Legacy Meridian Park Medical Center lowest Tualatin, OR · (503) 692-1212 CHG ASSAY OF FREE THYROXINE | $6.38 | $9.82 | — | 35% | Apr 1, 2026 source file |
| Legacy Mount Hood Medical Center lowest Gresham, OR · (503) 674-1122 CHG ASSAY OF FREE THYROXINE | $6.38 | $9.82 | — | 35% | Apr 1, 2026 source file |
| Legacy Emanuel Medical Center lowest Portland, OR · (503) 413-2200 CHG ASSAY OF FREE THYROXINE | $6.38 | $9.82 | — | 35% | Apr 1, 2026 source file |
| Legacy Emanuel Medical Center lowest Portland, OR · (503) 413-2200 CHG ASSAY OF FREE THYROXINE | $6.38 | $9.82 | — | 35% | Apr 1, 2026 source file |
| Legacy Good Samaritan Medical Center lowest Portland, OR · (503) 413-7682 CHG ASSAY OF FREE THYROXINE | $6.38 | $9.82 | — | 35% | Apr 1, 2026 source file |
| Legacy Meridian Park Medical Center Tualatin, OR · (503) 692-1212 HC T4 FREE THYROXINE FREE | $16.22 | $24.96 | — | 35% | Apr 1, 2026 source file |
| Legacy Salmon Creek Medical Center Vancouver, WA · (360) 487-1000 HC T4 FREE THYROXINE FREE | $16.22 | $24.96 | — | 35% | Apr 1, 2026 source file |
| Legacy Emanuel Medical Center Portland, OR · (503) 413-2200 HC T4 FREE THYROXINE FREE | $16.22 | $24.96 | — | 35% | Apr 1, 2026 source file |
| Legacy Good Samaritan Medical Center Portland, OR · (503) 413-7682 HC T4 FREE THYROXINE FREE | $16.22 | $24.96 | — | 35% | Apr 1, 2026 source file |
| Legacy Mount Hood Medical Center Gresham, OR · (503) 674-1122 HC T4 FREE THYROXINE FREE | $16.22 | $24.96 | — | 35% | Apr 1, 2026 source file |
| Legacy Good Samaritan Medical Center Portland, OR · (503) 413-7682 HC T4 FREE THYROXINE FREE | $16.22 | $24.96 | — | 35% | Apr 1, 2026 source file |
| Legacy Emanuel Medical Center Portland, OR · (503) 413-2200 HC T4 FREE THYROXINE FREE | $16.22 | $24.96 | — | 35% | Apr 1, 2026 source file |
| Legacy Salmon Creek Medical Center Vancouver, WA · (360) 487-1000 HC T4 FREE BY DIRECT DIALYSIS | $21.45 | $33.00 | — | 35% | Apr 1, 2026 source file |
| Legacy Good Samaritan Medical Center Portland, OR · (503) 413-7682 HC T4 FREE BY DIRECT DIALYSIS | $21.45 | $33.00 | — | 35% | Apr 1, 2026 source file |
| Legacy Good Samaritan Medical Center Portland, OR · (503) 413-7682 HC T4 FREE BY DIRECT DIALYSIS | $21.45 | $33.00 | — | 35% | Apr 1, 2026 source file |
| Legacy Emanuel Medical Center Portland, OR · (503) 413-2200 HC T4 FREE BY DIRECT DIALYSIS | $21.45 | $33.00 | — | 35% | Apr 1, 2026 source file |
| Legacy Emanuel Medical Center Portland, OR · (503) 413-2200 HC T4 FREE BY DIRECT DIALYSIS | $21.45 | $33.00 | — | 35% | Apr 1, 2026 source file |
| Legacy Emanuel Medical Center Portland, OR · (503) 413-2200 HC T4 FREE BY DIRECT DIALYSIS | $21.45 | $33.00 | — | 35% | Apr 1, 2026 source file |
| Legacy Mount Hood Medical Center Gresham, OR · (503) 674-1122 HC T4 FREE BY DIRECT DIALYSIS | $21.45 | $33.00 | — | 35% | Apr 1, 2026 source file |
| Legacy Meridian Park Medical Center Tualatin, OR · (503) 692-1212 HC T4 FREE BY DIRECT DIALYSIS | $21.45 | $33.00 | — | 35% | Apr 1, 2026 source file |
| Kaiser Sunnyside Medical Center Clackamas, OR · (503) 652-2880 ASSAY OF FREE THYROXINE | $37.40 | $44.00 | $11.00–$36.34 | 15% | — source file |
| Kaiser Foundation Hospital - Westside Hillsboro, OR · (971) 310-0100 ASSAY OF FREE THYROXINE | $37.40 | $44.00 | $11.00–$36.34 | 15% | — source file |
| Providence Newberg Medical Center Newberg, OR · (503) 537-1555 HC THYROXINE FREE | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Portland Medical Center Portland, OR · (503) 215-1111 HC ZT4 FREE BY EQUIL DIALYSIS(ARUP) | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Portland Medical Center Portland, OR · (503) 215-1111 HC ASSAY OF FREE THYROXINE CDM | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Portland Medical Center Portland, OR · (503) 215-1111 HC ASSAY OF FREE THYROXINE LAB | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Portland Medical Center Portland, OR · (503) 215-1111 HC THYROXINE FREE | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Portland Medical Center Portland, OR · (503) 215-1111 HC ZT4 FREE BY EQUIL DIALYSIS(ARUP) | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Portland Medical Center Portland, OR · (503) 215-1111 HC ASSAY OF FREE THYROXINE CDM | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Portland Medical Center Portland, OR · (503) 215-1111 HC ASSAY OF FREE THYROXINE LAB | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Portland Medical Center Portland, OR · (503) 215-1111 HC THYROXINE FREE | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Milwaukie Hospital Milwaukie, OR · (503) 513-8300 HC ZT4 FREE BY EQUIL DIALYSIS(ARUP) | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Milwaukie Hospital Milwaukie, OR · (503) 513-8300 HC ASSAY OF FREE THYROXINE CDM | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Milwaukie Hospital Milwaukie, OR · (503) 513-8300 HC ASSAY OF FREE THYROXINE LAB | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Milwaukie Hospital Milwaukie, OR · (503) 513-8300 HC THYROXINE FREE | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Willamette Falls Medical Center Oregon City, OR · (503) 656-1631 HC ZT4 FREE BY EQUIL DIALYSIS(ARUP) | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Willamette Falls Medical Center Oregon City, OR · (503) 656-1631 HC ASSAY OF FREE THYROXINE CDM | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Willamette Falls Medical Center Oregon City, OR · (503) 656-1631 HC ASSAY OF FREE THYROXINE LAB | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Willamette Falls Medical Center Oregon City, OR · (503) 656-1631 HC THYROXINE FREE | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Newberg Medical Center Newberg, OR · (503) 537-1555 HC ASSAY OF FREE THYROXINE CDM | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Newberg Medical Center Newberg, OR · (503) 537-1555 HC ZT4 FREE BY EQUIL DIALYSIS(ARUP) | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Providence Newberg Medical Center Newberg, OR · (503) 537-1555 HC ASSAY OF FREE THYROXINE LAB | $45.75 | $61.00 | — | 25% | Apr 1, 2026 source file |
| Oregon Health & Science University Portland, OR · (503) 494-9000 Free Thyroxine | $50.70 | $78.00 | $7.22–$78.00 | 35% | Mar 23, 2026 source file |
| Tuality Healthcare Hillsboro, OR · (503) 681-1111 Free Thyroxine | $50.70 | $78.00 | $7.04–$78.00 | 35% | — source file |
| Tuality Healthcare Hillsboro, OR · (503) 681-1111 Free T4, Serum | $68.90 | $106.00 | $7.04–$106.00 | 35% | — source file |
| Oregon Health & Science University Portland, OR · (503) 494-9000 Free T4, Serum | $68.90 | $106.00 | $7.22–$106.00 | 35% | Mar 23, 2026 source file |
| Shriners Childrens - Portland Portland, OR · (541) 241-5090 THYROXINE (THYROID CHEMICAL); FREE | $82.20 | $82.20 | $7.22–$31.57 | — | — source file |
| PeaceHealth Southwest Medical Center Vancouver, WA · (360) 256-2000 THYROXINE (THYROID CHEMICAL); FREE | $117.00 | $180.00 | $3.61–$29.27 | 35% | — source file |
| PeaceHealth Southwest Medical Center Vancouver, WA · (360) 256-2000 ASSAY OF FREE THYROXINE | $120.25 | $185.00 | $3.61–$29.27 | 35% | — source file |
| Legacy Emanuel Medical Center Portland, OR · (503) 413-2200 HC T4 FREE THYROXINE FREE | $130.65 | $201.00 | — | 35% | Apr 1, 2026 source file |
Outpatient: lowest $6.38, median $45.75, highest $117.00 — a 18.3× difference within the same market.
As an inpatient, the same code is billed by 11 facilities here, median $37.40. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 2 of 6 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it 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
A free T4 test measures thyroxine that is not bound to proteins, the active form of the main thyroid hormone. It is usually ordered with or after a TSH test to check for an underactive or overactive thyroid and to adjust thyroid medicine.
What the price covers
The price usually covers the free T4 test only. The blood draw and the TSH test (84443) are billed separately.