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Lab Test Dictionary

Supersaturation Profile, Pediatric, Random Urine (SSATR)

Methodology

CITRR; OXUR; UOSMR; SULFR; CALRR; POUR; UPHR; NAUR; CTURR; URCUR


Synonyms

Brushite Crystal; Calcium Oxalate Crystal; Hydroxyapatite Crystal; Kidney Stone Disease; Kidney Stone Profile; Sodium Urate Crystal; Stone Risk Profile; Uric Acid Crystals

Specimen Type

Urine

Performing Lab

Mayo Medical Lab


Epic ID

Other Reference Test

Lab Test Days

Monday-Friday

Standard TAT

7 Days


Collection Information

Specimen Required

30-40 mL Urine

Container Type

Sterile Container


Processing Information - Lab Use Only

Transport Temperature

Refrigerate-OK/Frozen-OK

Specimen Stability

Room Temp: Unacceptable; Refrigerated: 14 Days; Frozen: 14 Days

Test Volume Required

40 mL Urine

Minimum Test Volume

30 mL Urine

Processing Instructions

Collect a random urine specimen and divide the urine into 6 tubes. Specimen pH>8 indicate bacterial contamination, and testing will be canceled. Do not attempt to adjust pH as it will adversely affect resutls. Specimen must have a pH between 4.5-8 to be acceptable.


Included Tests

Brushite Crystal, Calcium, Calcium/Creatinine Ration, Calcium Oxalate, Chloride, Citrate Concentration, Citrate/Creatinine Ration, Creatinine, Hydroxyapatite Crystal, Magnesium, Magnesium/Creatinine Ration, Osmolality, Oxalate, Oxalate/Creatinine Ration, Oxalate Concentration, pH, Phosphorus, Phosphorus/Creatinine Ration, Potassium, Sodium, Sodium Urate Crystal, Sulfate, Uric Acid, Urice Acid/Creatinine Ratio, and Uric Acid Crystal


Comments

A timed 24-hour urine collection is the preferred specimen for measuring and interpreting this profile to determine kidney stone risk factors. Random collections with individual analytes normalized to urinary creatinine may be of some clinical use in patients who cannot collect a 24-hour specimen, typically small children. Therefore, this test is offered on random collections for children <16 years old.


CPT Codes

82140, 82310, 82436, 82507, 82570, 83735, 83935, 83945, 83986, 84105, 84133, 84300, 84392, 84560


Revised

07-18-16

Initials

SL