BUN test cost in Mayagüez, PR — inpatient
In Mayagüez, PR, 3 hospitals list a cash price for blood urea nitrogen (BUN) test as an inpatient: from $6.00 to $34.00, with a median of $16.26. The lowest listed price is at Bella Vista Hospital — $10.26 less than the median here. Across Puerto Rico, the median is $15.00 at 6 hospitals.
Cash prices at 3 facilities across 2 cities for code 84520, as an inpatient (admitted to hospital) . Collected Sep 27, 2026; the hospital files themselves were last updated between Dec 26, 2024 and Mar 31, 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 Mayagüez, PR.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Bella Vista Hospital lowest Mayaguez, PR · (787) 652-6045 UREA NITROGEN IN SERUM OR BF source file | $6.00 | $6.00 | $3.77–$10.00 | — |
| Bella Vista Hospital Mayaguez, PR · (787) 652-6045 UREA NITROGEN RAN OR 24HR URI source file | $10.00 | $10.00 | $3.90–$6.73 | — |
| Bella Vista Hospital Mayaguez, PR · (787) 652-6045 XRAY STUDY (BU/CR) source file | $15.00 | $15.00 | $3.77–$10.00 | — |
| Mayaguez Medical Center Mayaguez, PR · (787) 652-9200 Urea Nitrogen Body Fluid File of Mar 31, 2026 · source file | $16.26 | $16.26 | $3.77–$10.00 | — |
| Bella Vista Hospital Mayaguez, PR · (787) 652-6045 BUN(BLD UREA NITRO)(MC W MOD) source file | $20.00 | $20.00 | $3.77–$10.00 | — |
| Hospital de la Concepcion San German, PR · (787) 892-1860 Urea Nitro;Quan (Bun) Serum File of Dec 26, 2024 · source file | $34.00 | $34.00 | — | — |
Inpatient: lowest $6.00, median $16.26, highest $34.00 — a 5.7× difference within the same market.
As an outpatient, the same code is billed by 3 facilities here, median $16.26 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 1 of 2 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.