Blood type test cost in Baltimore, MD — inpatient
In Baltimore-Columbia-Towson, MD, 3 hospitals list a cash price for blood type test, ABO group only (Rh factor is a separate test) as an inpatient: from $7.23 to $14.78, with a median of $12.81. The lowest listed price is at Greater Baltimore Medical Center — $5.58 less than the median here. Across Maryland, the median is $12.52 at 5 hospitals.
Cash prices at 3 facilities across 2 cities for code 86900, as an inpatient (admitted to hospital) . Collected Sep 22, 2026; the hospital files themselves were last updated between — and —.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Baltimore-Columbia-Towson, MD.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Greater Baltimore Medical Center lowest Towson, MD · (443) 849-2000 HC Abo Typing | $7.23 | $7.38 | $7.23–$7.38 | 2% | — source file |
| Mercy Medical Center Baltimore, MD · (410) 332-9237 HC BLOOD TYPING SEROLOGIC ABO | $12.81 | $13.07 | $13.07–$12.81 | 2% | — source file |
| Mercy Medical Center Baltimore, MD · (410) 332-9237 HC RBC ANTIBODY SCREEN | $12.81 | $13.07 | $13.07–$12.81 | 2% | — source file |
| Mt. Washington Pediatric Hospital Baltimore, MD · (410) 578-5050 LAB-BLOOD TYPE (ABO) | $14.78 | $15.08 | $14.78–$15.08 | 2% | — source file |
Inpatient: lowest $7.23, median $12.81, highest $14.78 — a 2.0× difference within the same market.
As an outpatient, the same code is billed by 3 facilities here, median $12.81 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 2 of 3 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
This test finds your ABO blood group: A, B, AB or O. It is done before transfusions or surgery, during pregnancy, and sometimes just so a person knows their blood type.
What the price covers
The price usually covers the ABO grouping only. The blood draw is often billed separately, and the Rh factor (86901) and antibody screen (86850) are separate codes.