Potassium test cost in San Jose, CA
In San Jose-Sunnyvale-Santa Clara, CA, 6 hospitals list a cash price for potassium blood test: from $25.00 to $895.69, with a median of $114.96. The lowest listed price is at Lucile Salter Packard Children's Hospital at Stanford — $89.96 less than the median here. Across California, the median is $73.26 at 212 hospitals.
Cash prices at 6 facilities across 6 cities for code 84132, 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 Sep 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 San Jose-Sunnyvale-Santa Clara, CA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Lucile Salter Packard Children's Hospital at Stanford lowest Palo Alto, CA · (650) 497-8000 HC Potassium Pck File of Mar 31, 2026 · source file | $25.00 | $50.00 | $24.30 | 50% |
| Kaiser Foundation Hospital - San Jose San Jose, CA · (408) 972-7000 POTASSIUM SERUM PLASMA/WHOLE BLOOD source file | $104.16 | $186.00 | $5.00–$15.00 | 44% |
| Kaiser Foundation Hospital - Santa Clara Santa Clara, CA · (408) 236-6400 POTASSIUM SERUM PLASMA/WHOLE BLOOD source file | $104.16 | $186.00 | $5.00–$15.00 | 44% |
| El Camino Hospital Mountain View, CA · (650) 940-7000 HC POTASSIUM+1 more line at this price File of Apr 1, 2026 · source file | $125.75 | $503.00 | — | 75% |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 HC Bmt II Potassium File of Mar 31, 2026 · source file | $141.00 | $282.00 | $137.02 | 50% |
| Stanford Health Care Stanford, CA · (650) 723-4000 HC Bmt II Potassium File of Apr 1, 2026 · source file | $176.00 | $440.00 | — | 60% |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 HC Potassium Serum File of Mar 31, 2026 · source file | $178.00 | $356.00 | $172.98 | 50% |
| Stanford Health Care Stanford, CA · (650) 723-4000 HC Potassium+4 more lines at this price File of Apr 1, 2026 · source file | $188.40 | $471.00 | — | 60% |
| Lucile Salter Packard Children's Hospital at Stanford Palo Alto, CA · (650) 497-8000 HC Bmt I Potassium+3 more lines at this price File of Mar 31, 2026 · source file | $235.50 | $471.00 | $228.86 | 50% |
| Good Samaritan Hospital Los Gatos, CA · (408) 559-2011 POTASSIUM BLD File of Sep 1, 2026 · source file | $895.69 | $895.69 | $134.35–$895.69 | — |
Outpatient: lowest $25.00, median $114.96, highest $895.69 — a 35.8× difference within the same market.
As an inpatient, the same code is billed by 4 facilities here, median $114.96. 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 0 of 4 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 potassium test measures the level of potassium in the blood. Doctors check it for people on diuretics or blood pressure drugs, with kidney disease, an irregular heartbeat, or vomiting and diarrhea.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.