ARUP's Laboratory Test Directory

0020805: Kidney Stone Risk Panel II, Urine

Test Mnemonic: KID 2
Methodology: Refer to individual components

Performed: Mon-Fri

Reported: Refer to individual components

Specimen Required:  
Collect: 24-hour urine.  Refrigerate during collection.

Transport: Process and transport four aliquots according to the following specifications:
1st aliquot:  No adjustment to pH.  Transport 4.5 mL urine at 2-8°C. Submit specimen in an ARUP Standard Transport Tube. Record total volume, collection time interval, and "no adjustment to pH" on transport tube and test request form.  (Min: 3 mL)
2nd aliquot: No adjustment to pH.  Transport 4.5 mL urine, frozen. Submit specimen in an ARUP Standard Transport Tube. Record total volume, collection time interval, and "no adjustment to pH" on transport tube and test request form.  (Min: 3 mL)
3rd aliquot:  Adjust remaining 24-hour collection to a pH less than or equal to 2 by adding 6M HCI (approximately 10 mL HCI/24-hour specimen based on normal adult output of 1000-2000 mL/24 hours.  Pediatric specimens will require < 10 mL to reach the correct pH).  Mix well.  Transport a 4 mL aliquot of this adjusted specimen at 2-8°C. Submit specimen in an ARUP Standard Transport Tube. Record 24-hour total volume, collection time interval, and pH on transport tube and test request form. (Min:  0.5 mL)
4th aliquot:  After third aliquot has been collected, Adjust the remaining 24-hour collection to a pH greater than or equal to 9 by adding 6M NaOH (approximately 20 mL 6M NaOH/24-hour specimen based on normal adult output of 1000-2000 mL/24 hours.  Pediatric specimens will require < 20 mL to reach the correct pH).  Mix well and allow the entire 24-hour collection to stand for 15 minutes.  Transport a 4 mL aliquot of this adjusted specimen 2-8°C.  Submit specimen in an ARUP Standard Transport Tube. Record 24-hour total volume, collection time interval, and pH on transport tube and test request form. (Min: 0.5 mL)

Stability: Refer to individual components.

Reference Interval:
 
Test Number Components Reference Interval
 Calcium, Urine Calcium-free diet: 5-40 mg/d
Low calcium diet (800 mg/d or less): 50-150 mg/d
Average calcium diet (about 800 mg/d): 100-250 mg/d
High calcium diet (800 mg/d or greater): > 250 mg/d
 Chloride, Urine 140-250 mmol/d
 Citric Acid, Urine 18 years and older: 320-1240 mg/d
0081106Cystine Quantitative, Urine 0-5 months: 62-345 µmol/g crt
6-11 months: 53-133 µmol/g crt
1-3 years: 53-186 µmol/g crt
4-12 years: 35-106 µmol/g crt
13 years and older: 27-151 µmol/g crt
 Magnesium, Urine - mg/d 12-199 mg/d
 Oxalate, Urine0-12 years: 13-38 mg/d
Male 13 years and older: 7-44 mg/d
Female 13 years and older: 4-31 mg/d
 Phosphorus, Urine - mg/dL 400-1300 mg/dL
 Potassium, Urine 25-125 mmol/d
 Sodium, Urine51-286 mmol/d

Note:
This panel includes the following tests: Calcium, Chloride, Citric Acid, Creatinine, Cystine, Magnesium, Oxalate, Phosphorus, Potassium, Sodium, and Uric Acid.

CPT Code(s):
82340 Calcium; 82436 Chloride; 82507 Citric acid; 82131 Cystine; 83735 Magnesium; 83945 Oxalate; 84105 Phosphorus; 84133 Potassium; 84300 Sodium; 84560 Uric acid

 

 

 
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