GGT test cost in Spokane, WA
In Spokane-Spokane Valley, WA, 6 hospitals list a cash price for gamma-glutamyl transferase (GGT) blood test: from $13.86 to $156.80, with a median of $52.25. The lowest listed price is at Providence St Luke's Rehabilitation Medical Center — $38.39 less than the median here. Across Washington, the median is $52.17 at 58 hospitals.
Cash prices at 6 facilities across 3 cities for code 82977, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 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 Spokane-Spokane Valley, WA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Providence St Luke's Rehabilitation Medical Center lowest Spokane, WA HC GAMMA GT TOTAL File of Apr 1, 2026 · source file | $13.86 | $19.80 | — | 30% |
| Providence Mount Carmel Hospital Colville, WA · (509) 684-2561 HC ASSAY OF GGT+1 more line at this price File of Apr 1, 2026 · source file | $17.50 | $25.00 | — | 30% |
| Prov Sacred Hrt Medical Center & Childs Hospital Spokane, WA · (509) 474-3131 HC GAMMA GT TOTAL+1 more line at this price File of Apr 1, 2026 · source file | $42.00 | $60.00 | — | 30% |
| Prov Sacred Hrt Medical Center & Childs Hospital Spokane, WA · (509) 474-3131 HC ASSAY OF GGT+1 more line at this price File of Apr 1, 2026 · source file | $49.00 | $70.00 | — | 30% |
| Shriners Childrens - Spokane Spokane, WA · (509) 623-0422 ASSAY OF GGT source file | $62.50 | $62.50 | $7.20–$22.39 | — |
| Providence St Joseph Hospital Chewelah, WA · (509) 935-8211 HC ASSAY OF GGT+1 more line at this price File of Apr 1, 2026 · source file | $82.60 | $118.00 | — | 30% |
| Providence Holy Family Hospital Spokane, WA · (509) 482-0111 HC ASSAY OF GGT+2 more lines at this price File of Apr 1, 2026 · source file | $156.80 | $224.00 | — | 30% |
Outpatient: lowest $13.86, median $52.25, highest $156.80 — a 11.3× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $49.00. 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 the one hospital here that publishes insurer rates for this code, the cash price is not below the highest rate a health plan has negotiated. 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 GGT test measures a liver enzyme that rises with bile duct problems and heavy alcohol use. It helps tell whether a high alkaline phosphatase comes from the liver or bone.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.