Supersaturation Profile, 24 Hour, Urine


Abbrev Code:SSAT24   
Order Code:LAB6795Order Name:Supersaturation, 24 Hour, Urine
Synonyms:SAT24; Stone Former Panel; Urorisk; SUP24
Methodology:Varies
CPT Codes: 83945 x1, 84300 x1, 84133 x1, 82340 x1, 83735 x1, 82436 x1, 84105 x1, 84392 x1, 83986 x1, 84560 x1, 82570 x1, 83935 x1, 82140 x1, 82507 x1, 84540 x1
Test Includes:Urine sodium, potassium, calcium, magnesium, chloride, phosphorus, uric acid, creatinine, osmolality, pH, oxalate, sulfate and citrate excretion, ammonium, urea nitrogen and protein catabolic rate.
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 5-7 days.
Special Instructions:Specimen pH should be between 4.5 and 8, and will stay in this range if kept refrigerated. Specimens with pH >8 indicate bacterial contamination, and testing will be cancelled. Do not attempt to adjust pH as it will adversely affect results.
Associated Links:

Urine Collection Instructions



Collection Instructions

Specimen:Urine, 24 hour collection
Optimal Volume:35 mL
Minimum\Peds Volume:25 mL
Container:
Alternate Containers: 3 L plastic jug
Collection Instructions:Note: The addition of preservative or application of temperature controls must occur at the beginning of the collection.
  1. Collect urine for 24 hours.
  2. Add 5 mL of diazolidinyl urea as preservative at start of collection or refrigerate specimen during and after collection.
  3. Specimen pH should be between 4.5 and 8 and will stay in this range if kept refrigerated. Specimens with pH above 8 indicate bacterial contamination, and testing will be canceled. Do not attempt to adjust pH as it will adversely affect results.
Causes for Rejection:pH greater than 8; collection times less than 24 hours; room temperature specimens; frozen specimens.


Processing and Shipping

Shipping Instructions:Ship at refrigerated temperature.
Stability:14 days refrigerated
Test Performed at or Referral Lab Lab Sendouts  (Mayo Medical Laboratories)
Referral Lab number:SUP24


Interpretive

Reference Range:SUPERSATURATION REFERENCE MEANS (Delta G: DG)
Calcium oxalate: 1.77 DG
Brushite: 0.21 DG
Hydroxyapatite: 3.96 DG
Uric acid: 1.04 DG INDIVIDUAL URINE ANALYTES
OSMOLALITY, 24 HOUR, URINE
0-11 months: 50-750 mOsm/kg
> or =12 months: 150-1,150 mOsm/kg

pH, 24 HOUR, URINE
4.5-8.0

SODIUM, 24 HOUR, URINE
> or =18 years: 22-328 mmol/24 hours
Reference values have not been established for patients who are less than 18 years of age.

POTASSIUM, 24 HOUR, URINE
> or =18 years: 16-105 mmol/24 hours
Reference values have not been established for patients who are less than 18 years of age.

CALCIUM, 24 HOUR, URINE
Males: <250 mg/24 hours
Females: <200 mg/24 hours
Reference values have not been established for patients who are less than 18 years of age.

MAGNESIUM, 24 HOUR, URINE
51-269 mg/24 hours
Reference values have not been established for patients who are younger than 18 years of age.

CHLORIDE, 24 HOUR, URINE
> or =18 years: 34-286 mmol/24 hours
Reference values have not been established for patients who are younger than 18 years of age.

PHOSPHORUS, 24 HOUR, URINE
> or =18 years: 226-1,797 mg/24hours
Reference values have not been established for patients who are less younger 18 years of age.

SULFATE, 24 HOUR, URINE
7-47 mmol/24 hours

CITRATE EXCRETION, 24 HOUR, URINE
0-19 years: Not established
20 years: 150-1,191 mg/24 hours
21 years: 157-1,191 mg/24 hours
22 years: 164-1,191 mg/24 hours
23 years: 171-1,191 mg/24 hours
24 years: 178-1,191 mg/24 hours
25 years: 186-1,191 mg/24 hours
26 years: 193-1,191 mg/24 hours
27 years: 200-1,191 mg/24 hours
28 years: 207-1,191 mg/24 hours
29 years: 214-1,191 mg/24 hours
30 years: 221-1,191 mg/24 hours
31 years: 228-1,191 mg/24 hours
32 years: 235-1,191 mg/24 hours
33 years: 242-1,191 mg/24 hours
34 years: 250-1,191 mg/24 hours
35 years: 257-1,191 mg/24 hours
36 years: 264-1,191 mg/24 hours
37 years: 271-1,191 mg/24 hours
38 years: 278-1,191 mg/24 hours
39 years: 285-1,191 mg/24 hours
40 years: 292-1,191 mg/24 hours
41 years: 299-1,191 mg/24 hours
42 years: 306-1,191 mg/24 hours
43 years: 314-1,191 mg/24 hours
44 years: 321-1,191 mg/24 hours
45 years: 328-1,191 mg/24 hours
46 years: 335-1,191 mg/24 hours
47 years: 342-1,191 mg/24 hours
48 years: 349-1,191 mg/24 hours
49 years: 356-1,191 mg/24 hours
50 years: 363-1,191 mg/24 hours
51 years: 370-1,191 mg/24 hours
52 years: 378-1,191 mg/24 hours
53 years: 385-1,191 mg/24 hours
54 years: 392-1,191 mg/24 hours
55 years: 399-1,191 mg/24 hours
56 years: 406-1,191 mg/24 hours
57 years: 413-1,191 mg/24 hours
58 years: 420-1,191 mg/24 hours
59 years: 427-1,191 mg/24 hours
60 years: 434-1,191 mg/24 hours
>60 years: Not established

OXALATE, 24 HOUR, URINE
0.11-0.46 mmol/24 hours
9.7-40.5 mg/24 hours
Reference values have not been established for patients who are younger than 16 years of age.

URIC ACID, 24 HOUR, URINE
Males: > or =18 years: 200-1,000 mg/24 hours
Females: > or =18 years: 250-750 mg/24 hours
Reference values have not been established for patients who are younger than 18 years of age.

CREATININE, 24 HOUR, URINE
Males: > or =18 years: 930-2,955 mg/24 hours
Females: > or =18 years: 603-1,783 mg/24 hours
Reference values have not been established for patients who are younger than 18 years of age.

AMMONIUM, 24 HOUR, URINE
15-56 mmol/24 hour
Reference values have not been established for patients who are younger than 18 years or older than 77 years of age.

UREA NITROGEN, 24 HOUR, URINE
> or =18 years: 7-42 g/24h
Reference values have not been established for patients who are younger than 18 years of age.

PROTEIN CATABOLIC RATE, 24 HOUR, URINE
56-125 g/24 hours


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