C-Peptide, Urine (Includes Creatinine)
NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.
Immunochemiluminometric Assay (ICMA)
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
C Peptide, Urine FORWARD
C-Peptide, Urine FORWARD
C-Peptide, Urine FORWARD
Specimen Type Describes the specimen type needed for testing
Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.
50 mL aliquot from a 24-hour well-mixed 24-hour urine collection.
No preservative. Refrigerate specimen during collection, and
send specimen frozen, on dry ice, in a plastic, 60-mL urine bottle.
Note: 24-Hour volume is required on request form for processing.
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
Pediatric Minimum: 5.0 mL Note: This volume does not permit repeat analysis.
Warm reject; Cold OK
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
|Urine||Frozen (preferred)||30 days|
Reference Values 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.
C-Peptide, Urine (ng/mL)
Adults 24 h: 29 - 119
Overnight fasting: 15 - 94
3 h post prandial: 13 - 339
24 hour excretion, C-Peptide (ug/24 h)
Adults 24 h: 43 - 175
C-Peptide/Creatinine Ratio (ug/g)
Adults 24 h: 37 - 113
Overnight fasting: 10 - 50
3 h post prandial: 29 - 169
24 hr Creatinine, Urine (mg/24h)
Males 1000 - 2000
Females 800 - 1800
Creatinine, Urine (mg/dL)
Test Performed by: Esoterix Endocrinology
4301 Lost Hills Road
Calabasas Hills, CA 91301
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Thursday
Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
4 - 12 days
Performing Laboratory Location The location of the laboratory that performs the test
Test Classification Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer's instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR), Investigation Use Only (IUO) product, or a Research Use Only (RUO) product.
This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary.
CPT Code Information Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Medical Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.
82570/Creatinine; other source
LOINC® Code Information Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the result codes returned for this test or profile.
|Result ID||Reporting Name||LOINC Code|
|Z0235||24 hr Urine Volume||In Process|
|Z0231||24 hour excretion, C-Peptide||55920-3|
|Z0232||C-Peptide/Creatinine Ratio||In Process|
|Z0233||24 hr Creatinine, Urine||2162-6|