Total T4 test cost in Riverside, CA — inpatient
In Riverside-San Bernardino-Ontario, CA, 14 hospitals list a cash price for total thyroxine (T4) blood test as an inpatient: from $7.33 to $498.93, with a median of $17.14. The lowest listed price is at St Bernardine Medical Center — $9.81 less than the median here. Across California, the median is $39.20 at 183 hospitals.
Cash prices at 14 facilities across 11 cities for code 84436, as an inpatient (admitted to hospital) . Collected Sep 29, 2026; the hospital files themselves were last updated between Feb 28, 2026 and Sep 2, 2026.
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.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| St Bernardine Medical Center lowest San Bernardino, CA · (909) 883-8711 NH-THYROXINE TOTAL | $7.33 | $22.00 | $6.60–$18.04 | 67% | Feb 28, 2026 source file |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 NH-THYROXINE TOTAL | $8.06 | $20.61 | $12.37–$20.61 | 61% | Feb 28, 2026 source file |
| Loma Linda University Childrens Hospital Loma Linda, CA · (909) 558-8000 HC SOM THYROXIN TOTAL | $9.84 | $9.84 | $1.97–$8.36 | — | Sep 2, 2026 source file |
| Loma Linda University Behavioral Medicine Center Redlands, CA HC SOM THYROXIN TOTAL | $9.84 | $9.84 | $5.41–$7.87 | — | Aug 31, 2026 source file |
| Loma Linda University Medical Center Loma Linda, CA · (909) 558-4000 HC SOM THYROXIN TOTAL | $9.84 | $9.84 | $1.97–$8.86 | — | Sep 2, 2026 source file |
| Loma Linda University Medical Center - Murrieta Murrieta, CA · (951) 290-4000 HC SOM THYROXIN TOTAL | $9.84 | $9.84 | $1.78–$7.38 | — | Sep 2, 2026 source file |
| St Mary Medical Center Apple Valley, CA · (760) 242-2311 HC THYROXINE T4 | $14.50 | $30.20 | — | 52% | Apr 1, 2026 source file |
| Bear Valley Community Hospital Big Bear Lake, CA · (909) 866-6501 T4 TOTAL | $19.78 | $28.26 | $6.53–$24.02 | 30% | — source file |
| Kaiser Foundation Hospital - Fontana Fontana, CA · (909) 427-5000 ASSAY OF THYROXINE TOTAL | $24.96 | $48.00 | $5.00–$15.00 | 48% | — source file |
| Kaiser Foundation Hospital - Moreno Valley Moreno Valley, CA · (951) 251-6530 ASSAY OF THYROXINE TOTAL | $24.96 | $48.00 | $5.00–$15.00 | 48% | — source file |
| Kaiser Foundation Hospital - Riverside Riverside, CA · (951) 353-2000 ASSAY OF THYROXINE TOTAL | $24.96 | $48.00 | $5.00–$15.00 | 48% | — source file |
| Victor Valley Global Medical Center Victorville, CA · (760) 245-8691 T4 TOTAL | $50.00 | $50.00 | $26.25–$50.00 | — | May 13, 2026 source file |
| Loma Linda University Behavioral Medicine Center Redlands, CA HC THYROXIN T4 | $68.85 | $153.00 | $84.15–$122.40 | 55% | Aug 31, 2026 source file |
| Loma Linda University Childrens Hospital Loma Linda, CA · (909) 558-8000 HC THYROXIN T4 | $68.85 | $153.00 | $30.60–$130.05 | 55% | Sep 2, 2026 source file |
| Loma Linda University Medical Center - Murrieta Murrieta, CA · (951) 290-4000 HC THYROXIN T4 | $68.85 | $153.00 | $27.69–$114.75 | 55% | Sep 2, 2026 source file |
| Loma Linda University Medical Center Loma Linda, CA · (909) 558-4000 HC THYROXIN T4 | $68.85 | $153.00 | $30.60–$137.70 | 55% | Sep 2, 2026 source file |
| Palo Verde Hospital Blythe, CA · (760) 922-4115 T4, Total | $78.75 | $105.00 | — | 25% | Jul 1, 2026 source file |
| Palo Verde Hospital Blythe, CA · (760) 922-4115 T3 Uptake | $81.00 | $108.00 | — | 25% | Jul 1, 2026 source file |
| Community Hospital of San Bernardino San Bernardino, CA · (909) 887-6333 THYROXINE TOTAL | $102.45 | $262.00 | $157.20–$262.00 | 61% | Feb 28, 2026 source file |
| St Bernardine Medical Center San Bernardino, CA · (909) 883-8711 THYROXINE TOTAL | $144.86 | $435.00 | $130.50–$356.70 | 67% | Feb 28, 2026 source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Thyroxine Total | $498.93 | $498.93 | $4.82–$498.93 | — | — source file |
| Riverside University Medical Center Moreno Valley, CA · (951) 486-4000 HC Thyroxine Total | $498.93 | $498.93 | $4.82–$498.93 | — | — source file |
Inpatient: lowest $7.33, median $17.14, highest $498.93 — a 68.1× difference within the same market.
As an outpatient, the same code is billed by 21 facilities here, median $14.50 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 3 of 12 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
A total T4 test measures all the thyroxine hormone in the blood, both bound and free. Most doctors now order free T4 (84439) instead, which is less affected by pregnancy and medicines.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
7 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84436 ($52.65). 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.
| St Mary Medical Center Apple Valley, CAHC ASSAY OF THYROXINE TOTAL LAB | $2.10 | file |
| Eisenhower Medical Center Rancho Mirage, CAHC 90394 - Free Thyroxine Index (Fti), 84436 | $2.15 | file |
| St Bernardine Medical Center San Bernardino, CARL-A-T4 TOTAL 3005978 | $2.36 | file |
| Riverside University Medical Center Moreno Valley, CAHC Lab Ref T4 Thyroxine Total | $2.57 | file |
| Riverside University Medical Center Moreno Valley, CAHC Lab Ref T4 Thyroxine Total | $2.57 | file |
| Community Hospital of San Bernardino San Bernardino, CARL-A-T4 TOTAL 3005978 | $2.77 | file |
| Eisenhower Medical Center Rancho Mirage, CAHC Frtup - Thyroxine Total | $3.40 | file |