Test Details
Methodology
Cystine capacity, calcium, creatinine, citrate, urea nitrogen, phosphorus: Colormetric
Sulfate: Turbidity with barium precipitation
Sodium: Ion specific electrode
pH: Potentiometry
Result Turnaround Time
4 - 8 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
This test is used for people with known cystinuria, cystine stone formers or patients who had a reported "positive" screen from the standard Litholink test, Litholink 24-Hour Urine, KS [910235].
Special Instructions
Ordering this test will trigger the Litholink At-Home testing kit to be sent directly your patient. This testing requires the use of Litholink's At-Home testing cystine kit and preservatives.
Please state the 24-hour urine volume.
Limitations
This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration.
Specimen Requirements
Specimen
22-26 hour urine collection
Volume
Two 40 mL aliquots of 24-hour urine are required per collection: one before the addition of sodium carbonate (green-top tube) and one after the addition of sodium carbonate (orange-top tube)
Minimum Volume
Two 40 mL of 24-hour urine per collection
Collection Instructions
Included preservative functions as a volume marker must be added to the main collection container at the beginning of collection and then return a 40 mL aliquot of the 24-hour urine per collection.
Full 24-hour collection: Void and discard first urine and continue to collect for 24-hour period from that void time.
All samples must be immediately returned to the lab using the prepaid FedEx shipper.
Stability Requirements
Temperature | Period |
---|---|
Room temperature | 4 days or 96 hours from end of collection |
Storage Instructions
Room temperature with preservative; do not refrigerate
Causes for Rejection
Too old (>96 hours); under or over collected (<22 hours or >26 hours); incorrect use of the Litholink preservative or the Litholink preservative not detected
LOINC® Map
Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
---|---|---|---|---|---|---|
910245 | Litholink 24HrUr Quant Cystine | 910145 | Urine Volume (Preserved) | mL/24 hr | 3167-4 | |
910245 | Litholink 24HrUr Quant Cystine | 910132 | Cystine, Quant, Urine | mg/24 hr | 2179-0 | |
910245 | Litholink 24HrUr Quant Cystine | 910111 | Cystine Saturation | N/A | ||
910245 | Litholink 24HrUr Quant Cystine | 910108 | Cystine Capacity | mg/L | 2178-2 | |
910245 | Litholink 24HrUr Quant Cystine | 910137 | pH, 24 hr, Urine | 27378-9 | ||
910245 | Litholink 24HrUr Quant Cystine | 910140 | Sodium, Urine | mmol/24 hr | 2956-1 | |
910245 | Litholink 24HrUr Quant Cystine | 910121 | Urea Nitrogen, Urine | g/24 hr | 3096-5 | |
910245 | Litholink 24HrUr Quant Cystine | 910119 | Protein Catabolic Rate | g/kg/24 hr | 93746-6 | |
910245 | Litholink 24HrUr Quant Cystine | 910131 | Creatinine, Urine | mg/24 hr | 2162-6 | |
910245 | Litholink 24HrUr Quant Cystine | 910127 | Calcium, Urine | mg/24 hr | 6874-2 | |
910245 | Litholink 24HrUr Quant Cystine | 910138 | Phosphorus, Urine | mg/24 hr | 2779-7 | |
910245 | Litholink 24HrUr Quant Cystine | 910129 | Citrate, Urine | mg/24 hr | 6687-8 | |
910245 | Litholink 24HrUr Quant Cystine | 910123 | Brushite Saturation | 42673-4 | ||
910245 | Litholink 24HrUr Quant Cystine | 910105 | Calcium/Kg Body Weight | mg/24 hr/kg | Not Available | |
910245 | Litholink 24HrUr Quant Cystine | 910107 | Creatinine/Kg Body Weight | mg/24 hr/kg | 35654-3 | |
910245 | Litholink 24HrUr Quant Cystine | 910194 | Comment | 77202-0 | ||
910245 | Litholink 24HrUr Quant Cystine | 911323 | 11502-2 | |||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910145 | |||||
Result Code Name | Urine Volume (Preserved) | |||||
UofM | mL/24 hr | |||||
Result LOINC | 3167-4 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910132 | |||||
Result Code Name | Cystine, Quant, Urine | |||||
UofM | mg/24 hr | |||||
Result LOINC | 2179-0 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910111 | |||||
Result Code Name | Cystine Saturation | |||||
UofM | ||||||
Result LOINC | N/A | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910108 | |||||
Result Code Name | Cystine Capacity | |||||
UofM | mg/L | |||||
Result LOINC | 2178-2 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910137 | |||||
Result Code Name | pH, 24 hr, Urine | |||||
UofM | ||||||
Result LOINC | 27378-9 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910140 | |||||
Result Code Name | Sodium, Urine | |||||
UofM | mmol/24 hr | |||||
Result LOINC | 2956-1 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910121 | |||||
Result Code Name | Urea Nitrogen, Urine | |||||
UofM | g/24 hr | |||||
Result LOINC | 3096-5 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910119 | |||||
Result Code Name | Protein Catabolic Rate | |||||
UofM | g/kg/24 hr | |||||
Result LOINC | 93746-6 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910131 | |||||
Result Code Name | Creatinine, Urine | |||||
UofM | mg/24 hr | |||||
Result LOINC | 2162-6 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910127 | |||||
Result Code Name | Calcium, Urine | |||||
UofM | mg/24 hr | |||||
Result LOINC | 6874-2 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910138 | |||||
Result Code Name | Phosphorus, Urine | |||||
UofM | mg/24 hr | |||||
Result LOINC | 2779-7 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910129 | |||||
Result Code Name | Citrate, Urine | |||||
UofM | mg/24 hr | |||||
Result LOINC | 6687-8 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910123 | |||||
Result Code Name | Brushite Saturation | |||||
UofM | ||||||
Result LOINC | 42673-4 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910105 | |||||
Result Code Name | Calcium/Kg Body Weight | |||||
UofM | mg/24 hr/kg | |||||
Result LOINC | Not Available | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910107 | |||||
Result Code Name | Creatinine/Kg Body Weight | |||||
UofM | mg/24 hr/kg | |||||
Result LOINC | 35654-3 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 910194 | |||||
Result Code Name | Comment | |||||
UofM | ||||||
Result LOINC | 77202-0 | |||||
Order Code | 910245 | |||||
Order Code Name | Litholink 24HrUr Quant Cystine | |||||
Order Loinc | ||||||
Result Code | 911323 | |||||
Result Code Name | ||||||
UofM | ||||||
Result LOINC | 11502-2 |
Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
---|---|---|---|---|---|---|
Reflex 1 | 910150 | Pediatric Urine Calculations | 910113 | Oxalate Excretion, Normalized | mg/24hr/1.73 | Pending |
Reflex 1 | ||||||
Order Code | 910150 | |||||
Order Name | Pediatric Urine Calculations | |||||
Result Code | 910113 | |||||
Result Name | Oxalate Excretion, Normalized | |||||
UofM | mg/24hr/1.73 | |||||
Result LOINC | Pending |
Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
---|---|---|---|---|---|---|
Reflex 1 | 910150 | Pediatric Urine Calculations | 910130 | Citrate/Creat Ratio | mg/g creat | 13722-4 |
Reflex 1 | ||||||
Order Code | 910150 | |||||
Order Name | Pediatric Urine Calculations | |||||
Result Code | 910130 | |||||
Result Name | Citrate/Creat Ratio | |||||
UofM | mg/g creat | |||||
Result LOINC | 13722-4 |
Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
---|---|---|---|---|---|---|
Reflex 1 | 910150 | Pediatric Urine Calculations | 910115 | Uric Acid Excretion,Normalized | mg/24hr/1.73 | Pending |
Reflex 1 | ||||||
Order Code | 910150 | |||||
Order Name | Pediatric Urine Calculations | |||||
Result Code | 910115 | |||||
Result Name | Uric Acid Excretion,Normalized | |||||
UofM | mg/24hr/1.73 | |||||
Result LOINC | Pending |
Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
---|---|---|---|---|---|---|
Reflex 1 | 910150 | Pediatric Urine Calculations | 910114 | Phosphorus/Kg Body Weight | mg/24 hr/kg | Pending |
Reflex 1 | ||||||
Order Code | 910150 | |||||
Order Name | Pediatric Urine Calculations | |||||
Result Code | 910114 | |||||
Result Name | Phosphorus/Kg Body Weight | |||||
UofM | mg/24 hr/kg | |||||
Result LOINC | Pending |
Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
---|---|---|---|---|---|---|
Reflex 1 | 910150 | Pediatric Urine Calculations | 910112 | Magnesium/Kg Body Weight | mg/24 hr/kg | Pending |
Reflex 1 | ||||||
Order Code | 910150 | |||||
Order Name | Pediatric Urine Calculations | |||||
Result Code | 910112 | |||||
Result Name | Magnesium/Kg Body Weight | |||||
UofM | mg/24 hr/kg | |||||
Result LOINC | Pending |
Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
---|---|---|---|---|---|---|
Reflex 1 | 910151 | Pediatric Cystine Calculations | 910130 | Citrate/Creat Ratio | mg/g creat | 13722-4 |
Reflex 1 | ||||||
Order Code | 910151 | |||||
Order Name | Pediatric Cystine Calculations | |||||
Result Code | 910130 | |||||
Result Name | Citrate/Creat Ratio | |||||
UofM | mg/g creat | |||||
Result LOINC | 13722-4 |
Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
---|---|---|---|---|---|---|
Reflex 1 | 910151 | Pediatric Cystine Calculations | 910114 | Phosphorus/Kg Body Weight | mg/24 hr/kg | Pending |
Reflex 1 | ||||||
Order Code | 910151 | |||||
Order Name | Pediatric Cystine Calculations | |||||
Result Code | 910114 | |||||
Result Name | Phosphorus/Kg Body Weight | |||||
UofM | mg/24 hr/kg | |||||
Result LOINC | Pending |