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Test ID: PMLR    
PML/RARA Quantitative, PCR

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Method Description Describes how the test is performed and provides a method-specific reference

Total RNA is extracted from blood or bone marrow using the QIAmp kit (Qiagen). cDNA is made using the Superscript III kit (Invitrogen). Quantitative, real-time PCR is performed using the LightCycler instrument (Roche) and the data analyzed using the supplied software for relative quantification with calibrator normalization and efficiency correction. (Roche Applied Science LightCycler 2.0 Instrument Operation Manual. Version 4/1.2. 2003. Roche Diagnostics)

 

The normalized ratio is a relative quantification calculation as follows:

 

Normalized ratio*=

PML/RARA (sample)

GUSB (sample)

PML/RARA (calibrator)

GUSB (calibrator)

 

*Where GUSB mRNA is used to normalize variations in RNA quality and calibrator mRNA from a PML/RARA-positive cell line is used to normalize variations in run conditions.

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 Friday

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.

4 days

Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result

8 days

Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

RNA stored 3 months

Performing Laboratory Location The location of the laboratory that performs the test

Rochester