Free T4 test cost in Riverside, CA
In Riverside-San Bernardino-Ontario, CA, 25 hospitals list a cash price for free T4 (free thyroxine) thyroid blood test: from $6.00 to $740.75, with a median of $29.39. The lowest listed price is at Hemet Global Medical Center and 1 other hospital — $23.39 less than the median here. Across California, the median is $68.12 at 213 hospitals.
- The median here, $29.39, is 56% below the US median of $66.50.
- That is 3.3× Medicare's 2026 national rate for the same service ($9.02).
- Riverside, CA ranks 2nd of 5 metro areas in California by median, cheapest first.
- 9 of 25 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 25 facilities across 20 cities for code 84439, as an outpatient — the setting a self-pay patient normally buys. Collected Nov 1, 2026; the hospital files themselves were last updated between Jan 14, 2026 and Sep 30, 2026.
Lowest$6.00Hemet Global Medical Center + 1 more
Median$29.39half of hospitals charge less
Highest$740.75in this market
Difference123.5×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 Riverside-San Bernardino-Ontario, CA.
median
Lowest $6.00Highest $740.75
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Hemet Global Medical Center lowest Hemet, CA · (951) 652-2811 LAB FREE T4 File of Jun 15, 2026 · source file | $6.00 | $6.00 | $2.70–$19.86 | — |
| Menifee Global Medical Center lowest Menifee, CA · (951) 679-8888 LAB FREE T4 File of May 20, 2026 · source file | $6.00 | $6.00 | $2.70–$19.86 | — |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Lab Ref Free T4 Rflx From Tsh+3 more lines at this price File of Mar 30, 2026 · source file | $6.84 | $6.84 | $5.13–$11.13 | — |
| St Bernardine Medical Center San Bernardino, CA · (909) 883-8711 RL-A-FT4 ED-TMS 93244 File of Sep 30, 2026 · source file | $7.25 | $22.00 | $5.50–$56.75 | 67% |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 RL-A-FT4 ED-TMS 93244 File of Sep 30, 2026 · source file | $8.56 | $22.00 | $4.40–$56.75 | 61% |
| St Bernardine Medical Center San Bernardino, CA · (909) 883-8711 NH-THYROXINE FREE File of Sep 30, 2026 · source file | $8.91 | $27.06 | $6.77–$56.75 | 67% |
| Montclair Hospital Medical Center Montclair, CA · (909) 625-8300 Hc Assay Of Free Thyroxine File of Sep 1, 2026 · source file | $9.00 | $341.48 | $8.57–$341.48 | 97% |
| Chino Valley Medical Center Chino, CA · (909) 627-6111 Hc Assay Of Free Thyroxine File of Sep 1, 2026 · source file | $9.00 | $341.48 | $8.57–$341.48 | 97% |
| Victor Valley Global Medical Center Victorville, CA · (760) 245-8691 THYROXINE FREE File of May 13, 2026 · source file | $9.00 | $9.00 | $2.16–$49.00 | — |
| Desert Valley Hospital Victorville, CA · (760) 241-8000 THYROXINE (T-4) FREE File of Sep 1, 2026 · source file | $9.00 | $172.00 | $8.93–$172.00 | 95% |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 NH-THYROXINE FREE File of Sep 30, 2026 · source file | $10.53 | $27.06 | $5.42–$56.75 | 61% |
| Mountains Community Hospital Lake Arrowhead, CA · (909) 336-3651 T4 FREE DIRECT DIALYSIS File of Jan 14, 2026 · source file | $10.99 | $27.47 | $12.36–$23.35 | 60% |
| Mountains Community Hospital Lake Arrowhead, CA · (909) 336-3651 T4 FREE DIRECT DIALY File of Jan 14, 2026 · source file | $15.54 | $38.85 | $17.48–$33.02 | 60% |
| San Gorgonio Memorial Hospital Banning, CA · (951) 769-2101 THYROXINE (THYROID CHEMICAL); FREE File of May 20, 2026 · source file | $16.10 | $80.50 | $8.57–$80.50 | 80% |
| Mountains Community Hospital Lake Arrowhead, CA · (909) 336-3651 T4, FREE File of Jan 14, 2026 · source file | $18.22 | $45.56 | $20.50–$38.73 | 60% |
| St Bernardine Medical Center San Bernardino, CA · (909) 883-8711 THYROXINE FREE File of Sep 30, 2026 · source file | $22.06 | $67.00 | $7.85–$67.00 | 67% |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Lab Ref Free T4 by Equilibrium Dialys+1 more line at this price File of Mar 30, 2026 · source file | $25.72 | $25.72 | $6.33–$25.72 | — |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 THYROXINE FREE File of Sep 30, 2026 · source file | $28.00 | $72.00 | $9.02–$72.00 | 61% |
| Loma Linda University Medical Center - Murrieta Murrieta, CA · (951) 290-4000 HC SOM THYROXINE (T4), FREE File of Sep 2, 2026 · source file | $29.39 | $29.39 | $5.32–$85.59 | — |
| Loma Linda University Medical Center Loma Linda, CA · (909) 558-4000 HC SOM THYROXINE (T4), FREE File of Sep 2, 2026 · source file | $29.39 | $29.39 | $5.88–$91.17 | — |
| Loma Linda University Childrens Hospital Loma Linda, CA · (909) 558-8000 HC SOM THYROXINE (T4), FREE File of Sep 2, 2026 · source file | $29.39 | $29.39 | $5.88–$93.05 | — |
| Mountains Community Hospital Lake Arrowhead, CA · (909) 336-3651 FREE T4 File of Jan 14, 2026 · source file | $30.40 | $76.00 | $34.20–$64.60 | 60% |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Qu T4 Free Direct Dialysis+1 more line at this price File of Mar 30, 2026 · source file | $34.58 | $34.58 | $6.33–$34.58 | — |
| Victor Valley Global Medical Center Victorville, CA · (760) 245-8691 T4 FREE - QST File of May 13, 2026 · source file | $48.00 | $48.00 | $5.52–$49.00 | — |
| St Mary Medical Center Apple Valley, CA · (760) 242-2311 HC ASSAY OF FREE THYROXINE CDM File of Apr 1, 2026 · source file | $52.56 | $109.50 | — | 52% |
| Kaiser Foundation Hospital - Moreno Valley Moreno Valley, CA · (951) 251-6530 ASSAY OF FREE THYROXINE File of Apr 1, 2026 · source file | $68.12 | $131.00 | $7.00–$20.00 | 48% |
| Kaiser Foundation Hospital - Fontana Fontana, CA · (909) 427-5000 ASSAY OF FREE THYROXINE File of Apr 1, 2026 · source file | $68.12 | $131.00 | $7.00–$20.00 | 48% |
| Kaiser Foundation Hospital - Riverside Riverside, CA · (951) 353-2000 ASSAY OF FREE THYROXINE File of Apr 1, 2026 · source file | $68.12 | $131.00 | $7.00–$20.00 | 48% |
| Kaiser Ontario Medical Center Campus Ontario, CA · (909) 427-5000 ASSAY OF FREE THYROXINE File of Apr 1, 2026 · source file | $68.12 | $131.00 | $7.00–$20.00 | 48% |
| Redlands Community Hospital Redlands, CA · (909) 335-5500 Thyroxine (thyroid chemical), free File of Jun 19, 2026 · source file | $110.16 | $459.00 | $7.67–$413.10 | 76% |
| Loma Linda University Medical Center - Murrieta Murrieta, CA · (951) 290-4000 HC FREE T4 BY EIA File of Sep 2, 2026 · source file | $121.50 | $270.00 | $9.02–$202.50 | 55% |
| Loma Linda University Medical Center Loma Linda, CA · (909) 558-4000 HC FREE T4 BY EIA File of Sep 2, 2026 · source file | $121.50 | $270.00 | $7.31–$243.00 | 55% |
| Loma Linda University Childrens Hospital Loma Linda, CA · (909) 558-8000 HC FREE T4 BY EIA File of Sep 2, 2026 · source file | $121.50 | $270.00 | $7.31–$229.50 | 55% |
| San Antonio Regional Hospital Upland, CA · (909) 985-2811 Thyroxine (thyroid chemical), free File of Apr 2, 2026 · source file | $185.00 | $532.00 | $7.22–$977.55 | 65% |
| San Bernardino County Colton, CA · (909) 580-1000 HC ASSAY OF FREE THYROXINE - T4 FREE File of Feb 25, 2026 · source file | $209.00 | $209.00 | $7.91–$151.53 | — |
| Barstow Community Hospital Barstow, CA · (760) 256-1761 Thyroxine (thyroid chemical), free File of Sep 17, 2026 · source file | $229.89 | $383.15 | $10.34–$306.52 | 40% |
| Palo Verde Hospital Blythe, CA · (760) 922-4115 Thyroxine (T4) Free Direct LC File of Jul 1, 2026 · source file | $283.12 | $377.50 | — | 25% |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Thyroxine Free+1 more line at this price File of Mar 30, 2026 · source file | $498.93 | $498.93 | $6.33–$498.93 | — |
| Riverside Community Hospital Riverside, CA · (951) 788-3000 Thyroxine; free +1 more line at this price File of Sep 1, 2026 · source file | $740.75 | $740.75 | $9.02–$666.67 | — |
Hospital The hospital that published the price, its city and the line exactly as written in its price file.
Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More
List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More
Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More
Off list How much lower the cash price is than the list price.
No cash discount This line's cash price equals the hospital's full list price. Many hospitals still reduce bills for uninsured patients: ask the billing office for its self-pay discount in writing. More
Outpatient: lowest $6.00, median $29.39, highest $740.75 — a 123.5× difference within the same market.
As an inpatient, the same code is billed by 16 facilities here, median $29.39. 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 17 of 23 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 free T4 test is, what the price covers and why prices differ: Free T4 test explained.
3 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84439 ($57.00). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Hospital | Cash price | File |
|---|---|---|
| Eisenhower Medical Center Rancho Mirage, CAHC 35167 - T4, Free, Direct Dialysis | $3.17 | file |
| Eisenhower Medical Center Rancho Mirage, CAHC Free T4 | $4.46 | file |
| St Mary Medical Center Apple Valley, CAHC ASSAY OF FREE THYROXINE LAB | $4.80 | file |
File Link to the hospital's own price file.