TEST CATALOG ORDERING & RESULTS SPECIMEN HANDLING CUSTOMER SERVICE EDUCATION & INSIGHTS
Test Catalog

Test ID: RTRP1    
Tubular Reabsorption of Phosphorus, Random Urine and Serum

Specimen Type Describes the specimen type validated for testing

Serum
Urine

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Both serum and urine are required.

 

Patient Preparation: Fasting

Specimen Type: Serum

Collection Container/Tube: Red top or serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Label specimen as serum.

 

Specimen Type: Urine

Container/Tube: Plastic, 6-mL tube

Specimen Volume: 4 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

3. Label specimen as urine.

Forms

If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

Urine: 1 mL; Serum: 0.625 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

Gross hemolysis Reject

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
SerumFrozen (preferred)7 days
 Refrigerated 7 days
UrineRefrigerated (preferred)14 days
 Frozen 14 days
 Ambient 7 days