Magnesium test cost in Denver, CO — inpatient
In Denver-Aurora-Centennial, CO, 10 hospitals list a cash price for magnesium blood test as an inpatient: from $14.49 to $189.27, with a median of $107.30. The lowest listed price is at Denver Health and Hospital Authority — $92.81 less than the median here. Across Colorado, the median is $42.56 at 17 hospitals.
Cash prices at 10 facilities across 6 cities for code 83735, as an inpatient (admitted to hospital) . Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Jun 25, 2026.
Lowest$14.49Denver Health and Hospital Authority
Median$107.30half pay less
Highest$189.27in this market
Difference13.1×highest vs lowest
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Denver-Aurora-Centennial, CO.
median
Lowest $14.49Highest $376.62
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Denver Health and Hospital Authority lowest Denver, CO · (303) 436-4927 HC MAGNESIUM, URINE ARUP 0020477 | $14.49 | $41.39 | $14.20 | 65% | Apr 30, 2026 source file |
| Denver Health and Hospital Authority lowest Denver, CO · (303) 436-4927 HC MAGNESIUM, FECAL ARUP 0020105 | $14.49 | $41.39 | $14.20 | 65% | Apr 30, 2026 source file |
| Denver Health and Hospital Authority Denver, CO · (303) 436-4927 HC MAGNESIUM | $26.82 | $76.62 | $26.28 | 65% | Apr 30, 2026 source file |
| Denver Health and Hospital Authority Denver, CO · (303) 436-4927 HC MAGNESIUM (PICCOLO) | $26.82 | $76.62 | $26.28 | 65% | Apr 30, 2026 source file |
| Denver Health and Hospital Authority Denver, CO · (303) 436-4927 HC MAGNESIUM, URINE | $26.82 | $76.62 | $26.28 | 65% | Apr 30, 2026 source file |
| National Jewish Health Denver, CO · (303) 388-4461 HC MAGNESIUM, BLOOD | $31.50 | $45.00 | $6.70–$39.26 | 30% | — source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CSHB MG FECES | $33.80 | $52.00 | $7.80–$47.84 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CSHB MAGNESIUM RBC | $33.80 | $52.00 | $7.80–$47.84 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CSHB MAGNESIUM LVL 24HR URINE | $33.80 | $52.00 | $7.80–$47.84 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=MAGNESIUM SERUM | $80.60 | $124.00 | $18.60–$114.08 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=MAGNESIUM,URINE,RAND | $93.60 | $144.00 | $21.60–$132.48 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CSHB MAGNESIUM | $101.40 | $156.00 | $23.40–$143.52 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=MAGNESIUM RBC-ARUP | $105.95 | $163.00 | $24.45–$149.96 | 35% | Apr 17, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC MAGNESIUM URINE RANDOM | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC ASSAY OF MAGNESIUM - MAGNESIUM RBC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC CVICU IONIZED MAGNESIUM POC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC ASSAY OF MAGNESIUM - MAGNESIUM IONIZED | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC MAGNESIUM SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC MAGNESIUM TIMED URINE | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC MAGNESIUM URINE CALCULI RISK ASSESSMENT - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC MAGNESIUM - SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC MAGNESIUM RBC - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC MAGNESIUM LEVEL | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC MAGNESIUM URINE RANDOM | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC ASSAY OF MAGNESIUM - MAGNESIUM RBC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC CVICU IONIZED MAGNESIUM POC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC ASSAY OF MAGNESIUM - MAGNESIUM IONIZED | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC MAGNESIUM SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC MAGNESIUM, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC MAGNESIUM TIMED URINE | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC MAGNESIUM URINE CALCULI RISK ASSESSMENT - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC MAGNESIUM - SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Littleton Littleton, CO · (303) 730-8900 HC MAGNESIUM RBC - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC MAGNESIUM LEVEL | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC MAGNESIUM URINE RANDOM | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC ASSAY OF MAGNESIUM - MAGNESIUM RBC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC CVICU IONIZED MAGNESIUM POC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC ASSAY OF MAGNESIUM - MAGNESIUM IONIZED | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC MAGNESIUM SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC MAGNESIUM, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC MAGNESIUM TIMED URINE | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC MAGNESIUM URINE CALCULI RISK ASSESSMENT - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC MAGNESIUM - SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Parker Parker, CO · (303) 269-4000 HC MAGNESIUM RBC - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC MAGNESIUM, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC MAGNESIUM LEVEL | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC MAGNESIUM URINE RANDOM | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC ASSAY OF MAGNESIUM - MAGNESIUM RBC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC CVICU IONIZED MAGNESIUM POC | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC ASSAY OF MAGNESIUM - MAGNESIUM IONIZED | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC MAGNESIUM SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC MAGNESIUM, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC MAGNESIUM TIMED URINE | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC MAGNESIUM URINE CALCULI RISK ASSESSMENT - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC MAGNESIUM - SUPERSATURATION PROFILE, URINE - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Castle Rock Castle Rock, CO · (720) 455-5000 HC MAGNESIUM RBC - ARUP | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| AdventHealth Porter Denver, CO · (303) 778-1955 HC MAGNESIUM LEVEL | $107.30 | $107.30 | — | — | Apr 1, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CSHB MAGNESIUM URINE | $116.20 | $178.76 | $26.81–$164.46 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=MAGNESIUM, FECAL | $118.30 | $182.00 | $27.30–$167.44 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=MAGNESIUM/CREATININE RATIO RANDOM U-MAGNESIUM | $140.40 | $216.00 | $32.40–$198.72 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=MAGNESIUM TOTAL BLOOD | $143.00 | $220.00 | $33.00–$202.40 | 35% | Apr 17, 2026 source file |
| Denver Health and Hospital Authority Denver, CO · (303) 436-4927 HC ASSAY OF MAGNESIUM | $162.35 | $463.85 | $159.10 | 65% | Apr 30, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=PROPRANOLOL SCREEN BLOOD | $179.40 | $276.00 | $41.40–$253.92 | 35% | Apr 17, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=PROPRANOLOL SCREEN BLOOD-REFLEX | $179.40 | $276.00 | $41.40–$253.92 | 35% | Apr 17, 2026 source file |
| Denver Rehabilitation Hospital Denver, CO Assay of Magnesium, RBC | $184.83 | $184.83 | — | — | Apr 1, 2026 source file |
| Denver Rehabilitation Hospital Denver, CO Assay of magnesium | $184.83 | $184.83 | — | — | Apr 1, 2026 source file |
| Reunion Rehabilitation Hospital Inverness Englewood, CO Assay of magnesium | $184.83 | $184.83 | — | — | Apr 1, 2026 source file |
| Reunion Rehabilitation Hospital Inverness Englewood, CO Assay of Magnesium, RBC | $184.83 | $184.83 | — | — | Apr 1, 2026 source file |
| Craig Hospital Englewood, CO HC MAGNESIUM BLOOD | $189.27 | $496.75 | $257.32–$447.08 | 62% | Jun 25, 2026 source file |
| Childrens Hospital Colorado Aurora, CO · (720) 777-1234 HB=CATHARTIC LAXATIVES PROFILE (MG), FECES | $228.80 | $352.00 | $52.80–$323.84 | 35% | Apr 17, 2026 source file |
| Craig Hospital Englewood, CO HC MAGNESIUM OTHER SOURCE | $376.62 | $988.50 | $512.04–$889.65 | 62% | Jun 25, 2026 source file |
| Craig Hospital Englewood, CO HC MG FROM MML 82029 | $376.62 | $988.50 | $512.04–$889.65 | 62% | Jun 25, 2026 source file |
Inpatient: lowest $14.49, median $107.30, highest $189.27 — a 13.1× difference within the same market.
As an outpatient, the same code is billed by 10 facilities here, median $107.30 — that is the price to compare if you are not being admitted.
Cash or insurance?
At 3 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 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 magnesium test measures the level of magnesium in the blood. Doctors order it for muscle cramps or weakness, an irregular heartbeat, low potassium or calcium that does not correct, and for people on diuretics, long-term acid-reducing drugs or with kidney disease.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.