Methodology
Polymerase Chain Reaction (PCR) with Detection by Capillary Electrophoresis
Synonyms
Fragile X with Reflex; Fra (X); Martin-Bell Sydrome; FMR1; FRAX
Specimen Type
Whole Blood
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
LAB01628
Lab Test Days
Daily
Standard TAT
10 Days
Collection Information
Specimen Required
3-4 mL Whole Blood (1 mL for Infants)
Container Type
Lavender (EDTA)
Collection Instructions
Whole blood collected in an ACD Solution A/B (yellow-top) or sodium heparin (green-top) tube are also acceptable.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-OK/Ambient-OK
Specimen Stability
Room Temp: 8 Days; Refrigerated: 8 Days; Frozen: Do Not Freeze
Rejection Criteria
Extensive hemolysis obsered; Recieved frozen
Test Volume Required
4 mL Whole Blood
Minimum Test Volume
3 mL Whole Blood (1 mL for Infants)
Included Tests
If Fragile X, PCR result is not Normal, or Gray zone, Fragile X, Southern Blot will be performed.
Comments
Insurance authorization is required prior to draw for Outpatients. Ok to send on Inpatients.
CPT Codes
81243; 81244
Revised
11-15-19
Initials
SL