Alkaline phosphatase test cost in Washington, DC — inpatient
In Washington-Arlington-Alexandria, DC-VA-MD-WV, 12 hospitals list a cash price for alkaline phosphatase (ALP) blood test as an inpatient: from $5.00 to $97.04, with a median of $64.50. The lowest listed price is at Sentara Northern Virginia Medical Center — $59.50 less than the median here. Across District of Columbia, the median is $63.70 at 5 hospitals.
Cash prices at 12 facilities across 7 cities for code 84075, as an inpatient (admitted to hospital) . Collected Sep 29, 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 Washington-Arlington-Alexandria, DC-VA-MD-WV.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Sentara Northern Virginia Medical Center lowest Woodbridge, VA · (703) 523-1000 Chgl Alkaline Phosphatase File of Apr 1, 2026 · source file | $5.00 | $10.00 | — | 50% |
| Rehabilitation and Specialized Care Pediatric Center Washington, DC ALKA,PHOSPHATASE-ALK source file | $14.00 | $28.00 | $19.00–$27.00 | 50% |
| Children's National Rehabilitation and Specialized Care Washington, DC ALKALINE PHOSPHATASE ALK source file | $15.00 | $30.00 | $20.40–$28.50 | 50% |
| Sentara Northern Virginia Medical Center Woodbridge, VA · (703) 523-1000 Chgl (Qu) Alkaline Phosphatase, Bone Specific, S/O File of Apr 1, 2026 · source file | $19.00 | $38.00 | — | 50% |
| National Rehabilitation Hospital Washington, DC PHOSPHATASE ALKALINE+1 more line at this price File of Apr 1, 2026 · source file | $36.06 | $55.47 | $27.18–$47.15 | 35% |
| MedStar Washington Hospital Center Washington, DC · (202) 877-7000 ALKALINE PHSPHT BONE 8+2 more lines at this price File of Apr 1, 2026 · source file | $63.70 | $98.00 | $28.42–$83.30 | 35% |
| Inova Loudoun Hospital Leesburg, VA · (703) 858-6600 HC PHOSPHATASE ALKALINE source file | $64.50 | $129.00 | $5.18–$100.62 | 50% |
| Inova Mount Vernon Hospital Alexandria, VA · (703) 664-7105 HC PHOSPHATASE ALKALINE source file | $64.50 | $129.00 | $5.18–$100.62 | 50% |
| Inova Alexandria Hospital Alexandria, VA · (703) 504-3167 HC PHOSPHATASE ALKALINE source file | $64.50 | $129.00 | $5.18–$100.62 | 50% |
| Inova Fairfax Hospital Falls Church, VA · (703) 698-1110 HC PHOSPHATASE ALKALINE source file | $64.50 | $129.00 | $5.18–$100.62 | 50% |
| Inova Fair Oaks Hospital Fairfax, VA · (703) 391-4170 HC PHOSPHATASE ALKALINE source file | $64.50 | $129.00 | $5.18–$100.62 | 50% |
| Children's National Hospital Washington, DC · (202) 476-5000 Alkaline Phosphatase source file | $64.50 | $129.00 | $54.18–$70.56 | 50% |
| Children's National Hospital Washington, DC · (202) 476-5000 (BILL COMPONENT 40262) ALK PHOS source file | $66.50 | $133.00 | $55.86–$72.75 | 50% |
| MedStar Georgetown Hospital Northwest Washington, DC · (202) 784-3000 PHOSPHATASE ALKALINE+1 more line at this price File of Apr 1, 2026 · source file | $97.04 | $149.29 | $52.25–$134.36 | 35% |
| Children's National Hospital Washington, DC · (202) 476-5000 Alk Phosphatase,Bone Specific source file | $108.50 | $217.00 | $91.14–$118.70 | 50% |
Inpatient: lowest $5.00, median $64.50, highest $97.04 — a 19.4× difference within the same market.
As an outpatient, the same code is billed by 18 facilities here, median $64.50 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 11 of 11 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 2 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
An alkaline phosphatase test measures an enzyme from the liver, bile ducts and bones. High levels suggest a blocked bile duct, liver disease or bone disease.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
2 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84075 ($36.00). Such a line is almost always a physician's fee billed separately, an assistant's share or a placeholder — a real charge, but not the price of the procedure itself.
| Hospital | Cash price | File |
|---|---|---|
| Sentara Northern Virginia Medical Center Woodbridge, VAChgl (Qu) Porphobilinogen, 24 Hr Ur, S/O | $0.50 | file |
| Sentara Northern Virginia Medical Center Woodbridge, VAChgl (Qu) Alkaline Phosphatase Isoenzymes, S/O | $2.50 | file |