A short description of the method used to perform the test
NY State Available
Indicates the status of NY State approval and if the test is orderable for NY State clients.
Lists a shorter or abbreviated version of the Published Name for a test
Citric Acid, 24H U with Creat
Describes the specimen type validated for testing
Defines the optimal specimen required to perform the test and the preferred volume to complete testing
Specimen Type: Urine
Submission Container/Tube: Plastic, preservative-free urine container
Specimen Volume: 10 mL
Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning's first voiding. Specify 24-hour total volume on container.
1. Collect urine for 24 hours in a 24-hour urine container with no preservative.
2. Send 10 mL urine refrigerated in a plastic, preservative-free urine container.
3. Collection total volume is required.
Specimen Minimum Volume
Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory
Reject Due To
Identifies specimen types and conditions that may cause the specimen to be rejected
| Hemolysis || NA |
| Lipemia || NA |
| Icterus || NA |
| Other || Random Urine; Received room temperature; Acidified urine |
Specimen Stability Information
Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included
Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
Citric Acid, 24-Hour Urine:
100-1300 mg/24 h
Citric Acid/Creat Ratio:
Males: 60-660 mg/g creat
Females: 180-1070 mg/g creat
Creatinine, 24-Hour Urine:
Reference Ranges for Creatinine, 24-Hour Urine:
<3 years: Not Established
3-8 years: 0.10-0.80 g/24 h
9-12 years: 0.20-1.40 g/24 h
13-17 years: 0.40-1.90 g/24 h
>17 years: 0.50-2.15 g/24 h
Indicates whether the report includes an additional document with charts, images or other enriched information
Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.
Tuesday, Thursday, Saturday
The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.
5 to 11 days
Performing Laboratory Location
Indicates the location of the laboratory that performs the test
Quest Diagnostics Nichols Institute
Test Setup Resources
Test setup information contains test file definition details to support order and result interfacing between Mayo Clinic Laboratories and your Laboratory Information System.
Excel | Pdf
SI Sample Reports
International System (SI) of Unit reports are provided for a limited number of tests. These reports are intended for international account use and are only available through MayoLINK accounts that have been defined to receive them.
SI Normal Reports |
SI Abnormal Reports