Posted Price

Magnesium test at Ascension Seton Northwest

CPT 83735 · Austin, TX

Cash price$133.56
Gross charge$371.00
Insurer rates$5.63 – $166.95

These are Ascension Seton Northwest's own posted figures from its standard-charges file dated January 1, 2026. They are not a quote. Source: the hospital's file · its price transparency page.

Across 111 Texas hospitals we index that post a cash price for this service: lowest $6.57, median $160.50, highest $2,178.17. See every hospital.

Nearby hospitals, same service

HospitalDistanceCash priceGross chargeFile date
North Austin Medical Center
Austin, TX
3.4 mi$829.00$829.002026-09-01
Texas Childrens Hospital North Austin Campus
Austin, TX
6.0 mi$91.12$136.002026-03-05
Ascension Seton Medical Center Austin
Austin, TX
7.6 mi$133.56$371.002026-01-01
St. David's Medical Center
Austin, TX
7.6 mi$440.00$440.002026-09-01
Ascension Seton Cedar Park
Cedar Park, TX
8.0 mi$127.44$353.992026-01-01
Dell Children's Medical Center
Austin, TX
8.1 mi$233.63$333.752026-01-01
Dell Seton Medical Center at the University of TX
Austin, TX
9.2 mi$120.15$333.752026-01-01
Baylor Scott & White Medical Center - Round Rock
Round Rock, TX
9.8 mi$116.29$193.822026-06-13

Distances are straight-line from ZIP code centers. Each hospital's figures come from its own file; files are updated on different dates.

Every row for CPT 83735 in this hospital's file

Row in the hospital's fileSettingCashGrossInsurer min – max
MAGNESIUM
line 14706226
both$133.56$371.00$5.63 – $166.95
MAGNESIUM
line 14614165
both$120.15$333.75$5.63 – $150.19
MAGNESIUM
line 14614166
outpatient$120.15$333.75$5.63 – $150.19
MAGNESIUM
line 14706227
outpatient$133.56$371.00$5.63 – $166.95
MAGNESIUM, 24 HR URINE
line 14715738
both$120.15$333.75$5.63 – $150.19
MAGNESIUM, 24 HR URINE
line 14715739
outpatient$120.15$333.75$5.63 – $150.19
MAGNESIUM FLUID
line 14756605
both$120.15$333.75$5.63 – $150.19

The first row is the one used above. A price for one code usually covers the hospital's facility charge only; the doctor, anesthesia, pathology and other services can be billed separately. Ask the hospital for a good faith estimate before a scheduled service: if you pay yourself and the bill comes in $400 or more above the estimate, you can dispute it under the No Surprises Act.

Check a bill from this hospital All Ascension Seton Northwest prices