BUN test cost in Boise City, ID
In Boise City, ID, 7 hospitals list a cash price for blood urea nitrogen (BUN) test: from $9.60 to $126.07, with a median of $24.70. The lowest listed price is at Treasure Valley Hospital — $15.10 less than the median here. Across Idaho, the median is $35.94 at 28 hospitals.
Cash prices at 7 facilities across 4 cities for code 84520, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Mar 31, 2026 and Sep 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 Boise City, ID.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Treasure Valley Hospital lowest Boise, ID · (208) 373-5000 BUN POC | $9.60 | $128.00 | $3.95–$128.00 | 93% | — source file |
| St Luke's Nampa Medical Center Nampa, ID · (208) 505-2000 | $18.00 | $18.00 | — | — | — source file |
| St Luke's Regional Medical Center Boise, ID · (208) 381-2222 | $18.00 | $18.00 | — | — | — source file |
| Saint Alphonsus Medical Center - Nampa Nampa, ID · (208) 463-5000 HC Urea Nitrogen | $24.70 | $38.00 | $3.42–$34.20 | 35% | Mar 31, 2026 source file |
| Saint Alphonsus Regional Medical Center - Boise Boise, ID · (208) 367-2121 HC Urea Nitrogen | $24.70 | $38.00 | $3.42–$38.00 | 35% | Mar 31, 2026 source file |
| St Luke's Nampa Medical Center Nampa, ID · (208) 505-2000 | $40.00 | $40.00 | — | — | — source file |
| St Luke's Regional Medical Center Boise, ID · (208) 381-2222 | $40.00 | $40.00 | — | — | — source file |
| Valor Health Emmett, ID · (208) 365-3561 Urea nitrogen level to assess kidney function, quantitative | $42.28 | $44.50 | $1.76–$43.61 | 5% | Jun 12, 2026 source file |
| West Valley Medical Center Caldwell, ID · (208) 459-4641 BUN | $126.07 | $126.07 | $40.22–$119.77 | — | Sep 1, 2026 source file |
| West Valley Medical Center Caldwell, ID · (208) 459-4641 UREA NITROGEN OTHER | $126.07 | $126.07 | $40.22–$119.77 | — | Sep 1, 2026 source file |
| Saint Alphonsus Regional Medical Center - Boise Boise, ID · (208) 367-2121 HC Urea Nitrogen | $236.08 | — | $3.52–$15.42 | — | Mar 31, 2026 source file |
Outpatient: lowest $9.60, median $24.70, highest $126.07 — a 13.1× difference within the same market.
As an inpatient, the same code is billed by 5 facilities here, median $24.70. 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 4 of 5 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it 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.