Homocysteine test cost in Ontario, CA
In Ontario, CA, 1 hospital lists a cash price for homocysteine blood test: from $28.08 to $28.08, with a median of $28.08. Across California, the median is $76.80 at 90 hospitals.
Cash prices at 1 facility for code 83090, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between — and —.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Kaiser Foundation Hospital - Ontario Ontario, CA ASSAY OF HOMOCYSTEINE | $28.08 | $54.00 | $12.00–$35.00 | 48% | — source file |
Outpatient: lowest $28.08, median $28.08, highest $28.08.
As an inpatient, the same code is billed by 1 facility here, median $28.08. 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 homocysteine test measures an amino acid that rises with low vitamin B12 or folate and in some inherited conditions.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.