Phosphorus test cost in Kansas City, MO
In Kansas City, MO-KS, 18 hospitals list a cash price for phosphorus (phosphate) blood test: from $8.53 to $681.08, with a median of $163.47. The lowest listed price is at Ascentist Hospital — $154.94 less than the median here. Across Missouri, the median is $37.45 at 64 hospitals.
Cash prices at 18 facilities across 12 cities for code 84100, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Mar 6, 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 Kansas City, MO-KS.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Ascentist Hospital lowest Leawood, KS · (913) 529-1801 PHOSPHORUS source file | $8.53 | $30.00 | $7.87–$10.19 | 72% |
| Liberty Hospital Liberty, MO · (816) 781-7200 PHOSPHORUS +1 more line at this price source file | $22.00 | $81.00 | $22.60–$66.10 | 73% |
| Children's Mercy Hospital Kansas City, MO · (816) 234-3000 PHOSPHOROUS INORGANIC CMH+1 more line at this price source file | $26.88 | $56.00 | $4.98–$50.40 | 52% |
| Children's Mercy Hospital Kansas Overland Park, KS · (913) 696-8000 PHOSPHOROUS INORGANIC CMH+1 more line at this price source file | $26.88 | $56.00 | $4.27–$50.40 | 52% |
| NKC Health North Kansas City, MO · (816) 691-2000 PHOSPHOROUS BLOOD File of Mar 6, 2026 · source file | $27.26 | $94.00 | $4.40–$76.89 | 71% |
| Cass Regional Medical Center Harrisonville, MO · (816) 380-5888 PHOSPHOR INORG 84100 File of Apr 7, 2026 · source file | $44.10 | $63.00 | $4.74–$61.05 | 30% |
| Rehabilitation Hospital of Overland Park Overland Park, KS Phosphorus File of Aug 6, 2026 · source file | $75.35 | $75.35 | $3.79–$67.82 | — |
| Bates County Memorial Hospital Butler, MO · (660) 200-7000 PHOSPHORUS File of Apr 20, 2026 · source file | $91.61 | $130.87 | $4.74–$111.24 | 30% |
| Lafayette Regional Health Center Lexington, MO · (660) 259-2203 Phosphorus inorganic (phosphate); +1 more line at this price File of Sep 1, 2026 · source file | $156.05 | $156.05 | $4.74–$156.05 | — |
| AdventHealth Shawnee Mission Shawnee Mission, KS · (913) 676-2152 HC PHOSPHORUS File of Apr 1, 2026 · source file | $170.88 | $170.88 | — | — |
| AdventHealth South Overland Park Overland Park, KS · (913) 373-2000 HC PHOSPHORUS File of Apr 1, 2026 · source file | $170.88 | $170.88 | — | — |
| Menorah Medical Center Overland Park, KS · (913) 498-6000 PHOSPHORUS BLD+1 more line at this price File of Sep 1, 2026 · source file | $217.09 | $217.09 | $2.56–$173.67 | — |
| Research Psychiatric Center Kansas City, MO Phosphorus inorganic (phosphate); +1 more line at this price File of Sep 1, 2026 · source file | $245.93 | $245.93 | $2.56–$245.93 | — |
| Research Medical Center Kansas City, MO · (816) 276-4000 Phosphorus inorganic (phosphate); +1 more line at this price File of Sep 1, 2026 · source file | $245.93 | $245.93 | $4.74–$245.93 | — |
| Overland Park Regional Medical Center Olathe, KS · (913) 541-5000 PHOSPHORUS BLD File of Sep 1, 2026 · source file | $303.33 | $303.33 | $39.43–$227.50 | — |
| Lee's Summit Medical Center Lee's Summit, MO · (816) 282-5000 Phosphorus inorganic (phosphate); +1 more line at this price File of Sep 1, 2026 · source file | $318.55 | $318.55 | $2.56–$270.77 | — |
| Belton Regional Medical Center Kansas City, MO · (816) 348-1200 PHOSPHORUS BLD+1 more line at this price File of Sep 1, 2026 · source file | $322.67 | $322.67 | $4.19–$290.40 | — |
| Centerpoint Medical Center Independence, MO · (816) 698-7000 PHOSPHORUS BLD File of Sep 1, 2026 · source file | $681.08 | $681.08 | $88.54–$612.97 | — |
Outpatient: lowest $8.53, median $163.47, highest $681.08 — a 79.8× difference within the same market.
As an inpatient, the same code is billed by 10 facilities here, median $35.68. 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 7 of 16 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
A phosphorus test measures phosphate in the blood. It is used with calcium for kidney disease, bone disease and parathyroid problems.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.
3 rows held back from this comparison
They are priced below $1 or below a tenth of the national median for code 84100 ($42.00). 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 |
|---|---|---|
| Providence Medical Center Kansas City, KSHc Assay Of Inorganic Phosphorus | $4.00 | file |
| St Joseph Medical Center Kansas City, MOHc Assay Of Inorganic Phosphorus | $4.00 | file |
| Saint John Hospital Leavenworth, KSHc Assay Of Inorganic Phosphorus | $4.00 | file |