Test Catalog

Test ID: RMPSU    
Monoclonal Protein Study, Random, Urine

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

Specimen Type Describes the specimen type validated for testing


Ordering Guidance

The use of a random urine specimen is sufficient for identifying the presence or absence of a monoclonal immunoglobulin, but a 24-hour specimen is preferred for quantitating and monitoring the abnormality. See MPSU / Monoclonal Protein Study, 24 Hour, Urine.

Shipping Instructions

Refrigerate specimen during collection and send refrigerated.

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


-Urine Container, 60 mL (T313)

-Aliquot Tube, 5 mL (T465)

Submission Container/Tube: Plastic, 60-mL urine bottle and plastic, 5-mL tube

Specimen Volume: 50 mL

Collection Instructions:

1. Collect a random urine specimen.

2. Aliquot at least 25-mL of specimen into a plastic, 60-mL urine bottle and at least 1-mL of specimen into a plastic, 5-mL tube.

3. Label specimens appropriately (60-mL bottle for protein electrophoresis and 5-mL tube for protein, total).

Special Instructions Library of PDFs including pertinent information and forms related to the test


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

25 mL

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

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

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
UrineRefrigerated (preferred)14 days
 Frozen 5 days
 Ambient 24 hours