BUN test cost in Seattle, WA
In Seattle-Tacoma-Bellevue, WA, 18 hospitals list a cash price for blood urea nitrogen (BUN) test: from $16.17 to $44.00, with a median of $23.57. The lowest listed price is at Saint Clare Hospital — $7.40 less than the median here. Across Washington, the median is $36.20 at 58 hospitals.
Cash prices at 18 facilities across 14 cities for code 84520, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 27, 2026; the hospital files themselves were last updated between Feb 28, 2026 and Apr 1, 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 Seattle-Tacoma-Bellevue, WA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Saint Clare Hospital lowest Lakewood, WA · (253) 588-1711 HC BUN (POC) | $16.17 | $56.09 | $3.95–$42.07 | 71% | Feb 28, 2026 source file |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Istat Bun | $17.00 | $34.00 | — | 50% | Apr 1, 2026 source file |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Assay Urea Nitrogen, Quan | $17.00 | $34.00 | — | 50% | Apr 1, 2026 source file |
| St Anthony Hospital Gig Harbor, WA · (253) 530-2050 HC BUN (POC) | $17.06 | $56.09 | $3.95–$42.07 | 70% | Feb 28, 2026 source file |
| Highline Medical Center Burien, WA · (206) 431-5237 HC BUN (POC) | $17.13 | $56.09 | $3.95–$50.49 | 69% | Feb 28, 2026 source file |
| St Francis Community Hospital Federal Way, WA · (253) 944-8100 HC BUN (POC) | $17.61 | $56.09 | $3.95–$42.07 | 69% | Feb 28, 2026 source file |
| St Joseph Medical Center Tacoma, WA · (253) 627-4101 HC BUN (POC) | $18.58 | $56.09 | $3.95–$42.07 | 67% | Feb 28, 2026 source file |
| St Elizabeth Hospital Enumclaw, WA · (360) 825-2505 HC BUN (POC) | $19.83 | $56.09 | $3.95–$50.49 | 65% | Feb 28, 2026 source file |
| Snoqualmie Valley Hospital Snoqualmie, WA · (425) 831-2300 Facility Fee HC BLOOD UREA NITROGEN-LC | $20.24 | $34.89 | $3.87–$32.10 | 42% | — source file |
| Snoqualmie Valley Hospital Snoqualmie, WA · (425) 831-2300 Facility Fee HC ASSAY UREA NITROGEN, QUAN | $20.24 | $34.89 | $3.87–$32.10 | 42% | — source file |
| Virginia Mason Medical Center Seattle, WA · (206) 223-6600 UREA NITROGEN; QUANTITATIVE | $21.93 | $43.00 | $25.80–$34.40 | 49% | — source file |
| Valley Medical Center Renton, WA · (425) 228-3450 Assay of Urea Nitrogen Quantitative | $25.20 | $36.00 | — | 30% | — source file |
| Swedish Edmonds Edmonds, WA · (425) 640-4000 HC ASSAY OF UREA NITROGEN QUANTITATIVE LAB | $28.32 | $59.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle, WA · (206) 320-2000 HC BUN | $28.32 | $59.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle, WA · (206) 320-2000 HC ASSAY OF UREA NITROGEN QUANTITATIVE LAB | $28.32 | $59.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Issaquah Issaquah, WA · (425) 313-4000 HC BUN | $28.32 | $59.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Edmonds Edmonds, WA · (425) 640-4000 HC BUN | $28.32 | $59.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Issaquah Issaquah, WA · (425) 313-4000 HC ASSAY OF UREA NITROGEN QUANTITATIVE LAB | $28.32 | $59.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Medical Center Seattle, WA · (206) 386-6000 HC BUN | $28.32 | $59.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Medical Center Seattle, WA · (206) 386-6000 HC ASSAY OF UREA NITROGEN QUANTITATIVE LAB | $28.32 | $59.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Edmonds Edmonds, WA · (425) 640-4000 HC ASSAY OF UREA NITROGEN QUANTITATIVE | $28.80 | $60.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Issaquah Issaquah, WA · (425) 313-4000 HC ASSAY OF UREA NITROGEN QUANTITATIVE | $28.80 | $60.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Medical Center / Cherry Hill Seattle, WA · (206) 320-2000 HC ASSAY OF UREA NITROGEN QUANTITATIVE | $28.80 | $60.00 | — | 52% | Apr 1, 2026 source file |
| Swedish Medical Center Seattle, WA · (206) 386-6000 HC ASSAY OF UREA NITROGEN QUANTITATIVE | $28.80 | $60.00 | — | 52% | Apr 1, 2026 source file |
| Providence Regional Medical Center Everett Everett, WA · (425) 261-2000 HC BUN | $30.68 | $59.00 | — | 48% | Apr 1, 2026 source file |
| Providence Regional Medical Center Everett Everett, WA · (425) 261-2000 HC ASSAY OF UREA NITROGEN QUANTITATIVE CDM | $30.68 | $59.00 | — | 48% | Apr 1, 2026 source file |
| Providence Regional Medical Center Everett Everett, WA · (425) 261-2000 HC ASSAY OF UREA NITROGEN QUANTITATIVE LAB | $30.68 | $59.00 | — | 48% | Apr 1, 2026 source file |
| Seattle Children's Hospital Seattle, WA · (206) 987-2000 Esrd Assay of Urea Nitrogren | $32.70 | $32.70 | $8.24–$31.39 | — | — source file |
| Kaiser Permanente Central Hospital Seattle, WA · (206) 326-3000 UREA NITROGEN QUANTITATIVE | $36.80 | $46.00 | $3.00–$11.00 | 20% | Apr 1, 2026 source file |
| Cascade Valley Hospital Arlington, WA · (360) 435-2133 HC BLOOD UREA NITROGEN | $44.00 | $55.00 | $3.95–$49.50 | 20% | — source file |
| Seattle Children's Hospital Seattle, WA · (206) 987-2000 Urea Nitrogen, Blood (Bun) | $54.30 | $54.30 | $13.68–$52.13 | — | — source file |
| Seattle Children's Hospital Seattle, WA · (206) 987-2000 Urea Nitrogen, Body Fluid | $64.50 | $64.50 | $16.25–$61.92 | — | — source file |
Outpatient: lowest $16.17, median $23.57, highest $44.00 — a 2.7× difference within the same market.
As an inpatient, the same code is billed by 19 facilities here, median $25.20. 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 9 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
A BUN test measures urea nitrogen, a waste product removed by the kidneys. It is used with creatinine to check kidney function and hydration.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.