Lab tests CPT 84520 Outpatient

BUN test cost in Ypsilanti, MI

In Ypsilanti, MI, 1 hospital lists a cash price for blood urea nitrogen (BUN) test: from $9.75 to $9.75, with a median of $9.75. Across Michigan, the median is $17.48 at 91 hospitals.

Cash prices at 1 facility 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 Mar 31, 2026 and Mar 31, 2026.

Lowest$9.75St Joseph Mercy Ann Arbor
Median$9.75half pay less
Highest$9.75in this market
Difference1.0×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Ypsilanti, MI.

median
Lowest $9.75Highest $237.90

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
St Joseph Mercy Ann Arbor lowest Ypsilanti, MI · (734) 712-3456 HC Urea Nitrogen Body Fluid $9.75 $15.00 $1.70–$15.00 35% Mar 31, 2026
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St Joseph Mercy Ann Arbor Ypsilanti, MI · (734) 712-3456 HC Urea Nitrogen Post-Dialysis $22.10 $34.00 $1.70–$34.00 35% Mar 31, 2026
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St Joseph Mercy Ann Arbor Ypsilanti, MI · (734) 712-3456 HC Urea Nitrogen Pre-Dialysis $22.10 $34.00 $1.70–$34.00 35% Mar 31, 2026
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St Joseph Mercy Ann Arbor Ypsilanti, MI · (734) 712-3456 HC Urea Nitrogen $24.70 $38.00 $1.70–$38.00 35% Mar 31, 2026
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St Joseph Mercy Ann Arbor Ypsilanti, MI · (734) 712-3456 HC Urea Nitrogen $237.90 — $1.70–$12.27 — Mar 31, 2026
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Outpatient: lowest $9.75, median $9.75, highest $9.75.

As an inpatient, the same code is billed by 1 facility here, median $9.75. 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 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 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.