Mumps immunity test cost in Seattle, WA
In Seattle-Tacoma-Bellevue, WA, 18 hospitals list a cash price for mumps immunity blood test: from $9.41 to $300.30, with a median of $64.16. The lowest listed price is at Overlake Medical Center & Clinics — $54.75 less than the median here. Across Washington, the median is $71.71 at 58 hospitals.
Cash prices at 18 facilities across 14 cities for code 86735, 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 |
|---|---|---|---|---|
| Overlake Medical Center & Clinics lowest Bellevue, WA · (425) 688-5000 Hc Antibody Mumps Lab4903 File of Apr 1, 2026 · source file | $9.41 | $18.82 | — | 50% |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Mumps Antibodies, Igg File of Apr 1, 2026 · source file | $14.46 | $28.92 | — | 50% |
| Overlake Medical Center & Clinics Bellevue, WA · (425) 688-5000 Hc Mumps Antibodies, Igm File of Apr 1, 2026 · source file | $18.30 | $36.60 | — | 50% |
| Valley Medical Center Renton, WA · (425) 228-3450 Antibody Mumps source file | $39.20 | $56.00 | — | 30% |
| Virginia Mason Medical Center Seattle, WA · (206) 223-6600 ANTIBODY -MUMPS source file | $49.98 | $98.00 | $58.80–$78.40 | 49% |
| Saint Clare Hospital Lakewood, WA · (253) 588-1711 HC MUMPS VIRUS AB IGM File of Feb 28, 2026 · source file | $50.14 | $173.93 | $13.05–$130.45 | 71% |
| St Anthony Hospital Gig Harbor, WA · (253) 530-2050 HC MUMPS VIRUS AB IGM File of Feb 28, 2026 · source file | $52.91 | $173.93 | $13.05–$130.45 | 70% |
| Highline Medical Center Burien, WA · (206) 431-5237 HC MUMPS VIRUS AB IGM File of Feb 28, 2026 · source file | $53.12 | $173.93 | $13.05–$156.54 | 69% |
| St Francis Community Hospital Federal Way, WA · (253) 944-8100 HC MUMPS VIRUS AB IGM File of Feb 28, 2026 · source file | $54.59 | $173.93 | $13.05–$130.45 | 69% |
| St Joseph Medical Center Tacoma, WA · (253) 627-4101 HC MUMPS VIRUS AB IGM File of Feb 28, 2026 · source file | $57.61 | $173.93 | $13.05–$130.45 | 67% |
| St Elizabeth Hospital Enumclaw, WA · (360) 825-2505 HC MUMPS VIRUS AB IGM File of Feb 28, 2026 · source file | $61.47 | $173.93 | $13.05–$156.54 | 65% |
| Snoqualmie Valley Hospital Snoqualmie, WA · (425) 831-2300 Facility Fee HC MUMPS ANTIBODIES, IGM+2 more lines at this price source file | $66.85 | $115.25 | $12.79–$106.03 | 42% |
| Swedish Issaquah Issaquah, WA · (425) 313-4000 HC ANTIBODY MUMPS CDM+2 more lines at this price File of Apr 1, 2026 · source file | $68.64 | $143.00 | — | 52% |
| Swedish Medical Center / Cherry Hill Seattle, WA · (206) 320-2000 HC ANTIBODY MUMPS+2 more lines at this price File of Apr 1, 2026 · source file | $68.64 | $143.00 | — | 52% |
| Swedish Edmonds Edmonds, WA · (425) 640-4000 HC ANTIBODY MUMPS CDM File of Apr 1, 2026 · source file | $68.64 | $143.00 | — | 52% |
| Swedish Medical Center Seattle, WA · (206) 386-6000 HC ANTIBODY MUMPS+2 more lines at this price File of Apr 1, 2026 · source file | $68.64 | $143.00 | — | 52% |
| Providence Regional Medical Center Everett Everett, WA · (425) 261-2000 HC ANTIBODY MUMPS CDM+1 more line at this price File of Apr 1, 2026 · source file | $74.36 | $143.00 | — | 48% |
| Kaiser Permanente Central Hospital Seattle, WA · (206) 326-3000 ANTIBODY MUMPS File of Apr 1, 2026 · source file | $74.40 | $93.00 | $10.00–$35.00 | 20% |
| Cascade Valley Hospital Arlington, WA · (360) 435-2133 HC MUMPS ANTIBODY source file | $76.00 | $95.00 | $15.66–$85.50 | 20% |
| Seattle Children's Hospital Seattle, WA · (206) 987-2000 Mumps Virus Antibody Igm source file | $300.30 | $300.30 | $75.68–$288.29 | — |
Outpatient: lowest $9.41, median $64.16, highest $300.30 — a 31.9× difference within the same market.
As an inpatient, the same code is billed by 18 facilities here, median $64.16. 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 mumps antibody test shows whether you are immune to mumps. It is often ordered with measles and rubella tests for school, work or travel when vaccine records are missing.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.