Magnesium test cost in Austin, TX
In Austin-Round Rock-San Marcos, TX, 13 hospitals list a cash price for magnesium blood test: from $15.53 to $134.01, with a median of $15.53. The lowest listed price is at Baylor Scott & White Medical Center - Austin and 6 other hospitals. Across Texas, the median is $22.05 at 101 hospitals.
Cash prices at 13 facilities across 10 cities for code 83735, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Mar 5, 2026 and Jun 13, 2026.
Lowest$15.53Baylor Scott & White Medical Center - Austin + 6 more
Median$15.53half pay less
Highest$134.01in this market
Difference8.6×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 Austin-Round Rock-San Marcos, TX.
median
Lowest $15.53Highest $233.63
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Baylor Scott & White Medical Center - Austin lowest Austin, TX · (512) 654-2100 HC REF ARUP, MAGNESIUM URINE 0020477 | $15.53 | $25.88 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Emergency Medical Center - Cedar Park lowest Cedar Park, TX HC REF ARUP, MAGNESIUM URINE 0020477 | $15.53 | $25.88 | $7.04–$16.82 | 40% | Jun 3, 2026 source file |
| Baylor Scott & White Medical Center - Buda lowest Buda, TX · (737) 999-6200 HC REF ARUP, MAGNESIUM URINE 0020477 | $15.53 | $25.88 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Round Rock lowest Round Rock, TX · (512) 509-0401 HC REF ARUP, MAGNESIUM URINE 0020477 | $15.53 | $25.88 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Pflugerville lowest Pflugerville, TX · (512) 654-6100 HC REF ARUP, MAGNESIUM URINE 0020477 | $15.53 | $25.88 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Lakeway lowest Lakeway, TX HC REF ARUP, MAGNESIUM URINE 0020477 | $15.53 | $25.88 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Taylor lowest Taylor, TX · (512) 352-7611 HC REF ARUP, MAGNESIUM URINE 0020477 | $15.53 | $25.88 | $4.92–$42.28 | 40% | Jun 12, 2026 source file |
| Baylor Scott & White Medical Center - Taylor Taylor, TX · (512) 352-7611 HC REF MAYO, COMP MAGRU, CPT 83735 | $22.62 | $37.70 | $7.16–$42.28 | 40% | Jun 12, 2026 source file |
| Baylor Scott & White Medical Center - Round Rock Round Rock, TX · (512) 509-0401 HC REF MAYO, COMP MAGRU, CPT 83735 | $22.62 | $37.70 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Emergency Medical Center - Cedar Park Cedar Park, TX HC REF MAYO, COMP MAGRU, CPT 83735 | $22.62 | $37.70 | $7.04–$24.50 | 40% | Jun 3, 2026 source file |
| Baylor Scott & White Medical Center - Lakeway Lakeway, TX HC REF MAYO, COMP MAGRU, CPT 83735 | $22.62 | $37.70 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Pflugerville Pflugerville, TX · (512) 654-6100 HC REF MAYO, COMP MAGRU, CPT 83735 | $22.62 | $37.70 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Austin Austin, TX · (512) 654-2100 HC REF MAYO, COMP MAGRU, CPT 83735 | $22.62 | $37.70 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Buda Buda, TX · (737) 999-6200 HC REF MAYO, COMP MAGRU, CPT 83735 | $22.62 | $37.70 | $5.63–$42.28 | 40% | Jun 13, 2026 source file |
| Texas Children's Hospital - Austin Austin, TX · (832) 824-1100 TC MANGANESE REFERENCE TEST STONE | $34.84 | $52.00 | $6.70–$49.40 | 33% | Mar 5, 2026 source file |
| Baylor Scott & White Medical Center - Pflugerville Pflugerville, TX · (512) 654-6100 HC REF MAYO MAGU MAGNESIUM, 24 HR, U | $40.11 | $66.85 | $5.63–$60.16 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Lakeway Lakeway, TX HC REF MAYO MAGU MAGNESIUM, 24 HR, U | $40.11 | $66.85 | $5.63–$60.16 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Austin Austin, TX · (512) 654-2100 HC REF MAYO MAGU MAGNESIUM, 24 HR, U | $40.11 | $66.85 | $5.63–$50.14 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Round Rock Round Rock, TX · (512) 509-0401 HC REF MAYO MAGU MAGNESIUM, 24 HR, U | $40.11 | $66.85 | $5.63–$60.16 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Taylor Taylor, TX · (512) 352-7611 HC REF MAYO MAGU MAGNESIUM, 24 HR, U | $40.11 | $66.85 | $9.82–$53.48 | 40% | Jun 12, 2026 source file |
| Baylor Scott & White Medical Center - Buda Buda, TX · (737) 999-6200 HC REF MAYO MAGU MAGNESIUM, 24 HR, U | $40.11 | $66.85 | $5.63–$50.14 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Emergency Medical Center - Cedar Park Cedar Park, TX HC REF MAYO MAGU MAGNESIUM, 24 HR, U | $40.11 | $66.85 | $7.04–$43.45 | 40% | Jun 3, 2026 source file |
| Ascension Seton Smithville, TX · (512) 237-3214 MAGNESIUM, 24 HR URINE | $41.85 | $116.25 | $5.63–$52.31 | 64% | — source file |
| Ascension Seton Smithville, TX · (512) 237-3214 MAGNESIUM, 24 HR URINE | $41.85 | $116.25 | $5.63–$52.31 | 64% | — source file |
| Texas Children's Hospital - Austin Austin, TX · (832) 824-1100 TC STONE RISK - MAGNESIUM URINE | $60.30 | $90.00 | $6.70–$85.50 | 33% | Mar 5, 2026 source file |
| Ascension Cedar Park Cedar Park, TX · (512) 528-7000 MAGNESIUM URINE 24 | $66.84 | $185.68 | $5.63–$83.56 | 64% | — source file |
| Ascension Cedar Park Cedar Park, TX · (512) 528-7000 MAGNESIUM URINE 24 | $66.84 | $185.68 | $5.63–$83.56 | 64% | — source file |
| Ascension Cedar Park Cedar Park, TX · (512) 528-7000 MAGNESIUM IONIZED | $66.84 | $185.68 | $5.63–$83.56 | 64% | — source file |
| Ascension Cedar Park Cedar Park, TX · (512) 528-7000 MAGNESIUM IONIZED | $66.84 | $185.68 | $5.63–$83.56 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $81.38 | $116.25 | $5.63–$52.31 | 30% | — source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $81.38 | $116.25 | $5.63–$52.31 | 30% | — source file |
| Texas Children's Hospital - Austin Austin, TX · (832) 824-1100 TC MAGNESIUM-SERUM,URINE | $91.12 | $136.00 | $6.70–$129.20 | 33% | Mar 5, 2026 source file |
| Texas Children's Hospital - Austin Austin, TX · (832) 824-1100 TC MAGNESIUM - URINE | $91.12 | $136.00 | $6.70–$129.20 | 33% | Mar 5, 2026 source file |
| Ascension Seton Kyle, TX · (512) 324-5000 MAGNESIUM | $115.56 | $321.00 | $5.63–$144.45 | 64% | — source file |
| Ascension Seton Kyle, TX · (512) 324-5000 MAGNESIUM | $115.56 | $321.00 | $5.63–$144.45 | 64% | — source file |
| Ascension Seton Kyle, TX · (512) 324-5000 MAGNESIUM FLUID | $115.56 | $321.00 | $5.63–$144.45 | 64% | — source file |
| Ascension Seton Kyle, TX · (512) 324-5000 MAGNESIUM FLUID | $115.56 | $321.00 | $5.63–$144.45 | 64% | — source file |
| Ascension Seton Kyle, TX · (512) 324-5000 MAGNESIUM URINE 24HR | $115.56 | $321.00 | $5.63–$144.45 | 64% | — source file |
| Ascension Seton Kyle, TX · (512) 324-5000 MAGNESIUM URINE 24HR | $115.56 | $321.00 | $5.63–$144.45 | 64% | — source file |
| Baylor Scott & White Medical Center - Lakeway Lakeway, TX HC MAGNESIUM - URORISK | $116.29 | $193.82 | $5.63–$174.44 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Austin Austin, TX · (512) 654-2100 HC MAGNESIUM | $116.29 | $193.82 | $5.63–$145.37 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Lakeway Lakeway, TX HC MAGNESIUM | $116.29 | $193.82 | $5.63–$174.44 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Lakeway Lakeway, TX HC MAGNESIUM, RBC | $116.29 | $193.82 | $5.63–$174.44 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Pflugerville Pflugerville, TX · (512) 654-6100 HC MAGNESIUM - URORISK | $116.29 | $193.82 | $5.63–$174.44 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Pflugerville Pflugerville, TX · (512) 654-6100 HC MAGNESIUM, RBC | $116.29 | $193.82 | $5.63–$174.44 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Austin Austin, TX · (512) 654-2100 HC MAGNESIUM, RBC | $116.29 | $193.82 | $5.63–$145.37 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Austin Austin, TX · (512) 654-2100 HC MAGNESIUM - URORISK | $116.29 | $193.82 | $5.63–$145.37 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Pflugerville Pflugerville, TX · (512) 654-6100 HC MAGNESIUM | $116.29 | $193.82 | $5.63–$174.44 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Taylor Taylor, TX · (512) 352-7611 HC MAGNESIUM - URORISK | $116.29 | $193.82 | $9.82–$155.06 | 40% | Jun 12, 2026 source file |
| Baylor Scott & White Medical Center - Taylor Taylor, TX · (512) 352-7611 HC MAGNESIUM, RBC | $116.29 | $193.82 | $9.82–$155.06 | 40% | Jun 12, 2026 source file |
| Baylor Scott & White Medical Center - Taylor Taylor, TX · (512) 352-7611 HC MAGNESIUM | $116.29 | $193.82 | $9.82–$155.06 | 40% | Jun 12, 2026 source file |
| Baylor Scott & White Medical Center - Buda Buda, TX · (737) 999-6200 HC MAGNESIUM - URORISK | $116.29 | $193.82 | $5.63–$145.37 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Buda Buda, TX · (737) 999-6200 HC MAGNESIUM, RBC | $116.29 | $193.82 | $5.63–$145.37 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Buda Buda, TX · (737) 999-6200 HC MAGNESIUM | $116.29 | $193.82 | $5.63–$145.37 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Round Rock Round Rock, TX · (512) 509-0401 HC MAGNESIUM - URORISK | $116.29 | $193.82 | $5.63–$174.44 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Round Rock Round Rock, TX · (512) 509-0401 HC MAGNESIUM, RBC | $116.29 | $193.82 | $5.63–$174.44 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Medical Center - Round Rock Round Rock, TX · (512) 509-0401 HC MAGNESIUM | $116.29 | $193.82 | $5.63–$174.44 | 40% | Jun 13, 2026 source file |
| Baylor Scott & White Emergency Medical Center - Cedar Park Cedar Park, TX HC MAGNESIUM | $116.29 | $193.82 | $7.04–$125.98 | 40% | Jun 3, 2026 source file |
| Baylor Scott & White Emergency Medical Center - Cedar Park Cedar Park, TX HC MAGNESIUM, RBC | $116.29 | $193.82 | $7.04–$125.98 | 40% | Jun 3, 2026 source file |
| Baylor Scott & White Emergency Medical Center - Cedar Park Cedar Park, TX HC MAGNESIUM - URORISK | $116.29 | $193.82 | $7.04–$125.98 | 40% | Jun 3, 2026 source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Smithville, TX · (512) 237-3214 MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Smithville, TX · (512) 237-3214 MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Smithville, TX · (512) 237-3214 MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Smithville, TX · (512) 237-3214 MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Smithville, TX · (512) 237-3214 MAGNESIUM URINE 24HR | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Smithville, TX · (512) 237-3214 MAGNESIUM URINE 24HR | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Kyle, TX · (512) 324-5000 MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Seton Kyle, TX · (512) 324-5000 MAGNESIUM, 24 HR URINE | $120.15 | $333.75 | $5.63–$150.19 | 64% | — source file |
| Ascension Cedar Park Cedar Park, TX · (512) 528-7000 MAGNESIUM | $127.44 | $353.99 | $5.63–$159.30 | 64% | — source file |
| Ascension Cedar Park Cedar Park, TX · (512) 528-7000 MAGNESIUM | $127.44 | $353.99 | $5.63–$159.30 | 64% | — source file |
| Ascension Seton Luling, TX · (830) 875-7000 MAGNESIUM FLUID | $134.01 | $372.25 | $5.63–$167.51 | 64% | — source file |
| Ascension Seton Luling, TX · (830) 875-7000 MAGNESIUM FLUID | $134.01 | $372.25 | $5.63–$167.51 | 64% | — source file |
| Ascension Seton Luling, TX · (830) 875-7000 MAGNESIUM | $134.01 | $372.25 | $5.63–$167.51 | 64% | — source file |
| Ascension Seton Luling, TX · (830) 875-7000 MAGNESIUM | $134.01 | $372.25 | $5.63–$167.51 | 64% | — source file |
| Ascension Seton Luling, TX · (830) 875-7000 MAGNESIUM URINE 24HR | $134.01 | $372.25 | $5.63–$167.51 | 64% | — source file |
| Ascension Seton Luling, TX · (830) 875-7000 MAGNESIUM URINE 24HR | $134.01 | $372.25 | $5.63–$167.51 | 64% | — source file |
| Ascension Seton Austin, TX MAGNESIUM URINE 24HR | $233.63 | $333.75 | $5.63–$150.19 | 30% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $233.63 | $333.75 | $5.63–$150.19 | 30% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $233.63 | $333.75 | $5.63–$150.19 | 30% | — source file |
| Ascension Seton Austin, TX MAGNESIUM | $233.63 | $333.75 | $5.63–$150.19 | 30% | — source file |
| Ascension Seton Austin, TX MAGNESIUM URINE 24HR | $233.63 | $333.75 | $5.63–$150.19 | 30% | — source file |
| Ascension Seton Austin, TX MAGNESIUM FLUID | $233.63 | $333.75 | $5.63–$150.19 | 30% | — source file |
Outpatient: lowest $15.53, median $15.53, highest $134.01 — a 8.6× difference within the same market.
As an inpatient, the same code is billed by 13 facilities here, median $15.53. 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 12 of 13 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 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.