Pharmacogenomic (PGx) Testing
Pharmacogenomic testing , also known as PGx testing, is the analysis of a patient’s genes in regards to how they process and respond to prescriptions and over-the-counter medications. This test can be used to give insight into how genetic factors contribute to current and potential medications for each individual based on a patient’s genetic drug metabolism. Through genotyping 36 genes, this test will be an important aid for dosing, prescribing, changing medications, and understanding drug interactions for each patient.
There are many benefits for PGx testing:
- Tailor medications and dosages based on one’s genetic makeup to maximize the intended use.
- Reduce the chance of an adverse drug reactions, side effects, and/or dependency.
- Improve the efficacy of mental health medications.
- Better support pain relief post-surgery and/or chronically.
Test Code: 25D | PGX Comprehensive Panel |
Performing Lab: | SMA Specialty Medical Lab |
TEST INCLUDES | 12Q15, ABCB1, ABCG2, ANKK1, APOe, COMT, CYP1A2, CYP2B6, CYP2C19, CYP2C9, CYP2D6, CYP3A4, CYP3A5, CYP4F2, DPYD, DRD2, F2, F5, FKBP5, GRIK4, HTR2A, HTR2C, ITGB3, LPA, MC4R, MTHFR, NUDT15, OPRD1, OPRK1, OPRM1, SLCO1B1, TPMT, UGT1A1, UGT2B15, and VKORC1 ** See Requistion for Genes Present in Individual Panel; Genes Tested Vary** |
Reference Ranges: | n/a |
Volume | For Whole Blood samples, a minimum volume of 2 mL whole blood collected in K2EDTA tubes is required. |
Specimen | Whole Blood or Buccal Swab |
container | Lavender top K2 EDTA or Buccal swab specimens collected with 4N6FLOQ swabs manufactured by Copan |
Collection | For Buccal Swab collection; Open the peel pouch. While holding the swab by the handle remove it from the pouch. Holding the swab by the handle, insert the swab inside the mouth over the tongue and wet the swab with saliva. Move the swab to the side of the mouth and firmly roll the swab 10 times against the cheek, close to the gingival wall. Use the index and medium finger to press on the cheek while collecting the swab. Repeat step #3 by transferring the swab on the other cheek. Reinsert the swab into the peelpouch after sample collection. Please collect at least two swabs per patient to minimize DNA extraction failure rates. For Lavender top collection; see package insert. |
Transport Temperature: | For Lavender tops, up to 7 days at room temp and 30 days at 2˚C to 8˚C; For Buccal Swabs, 30 days at Room Temperature. |
Specimen Stability: | For Lavender tops, up to 7 days at room temp and 30 days at 2˚C to 8˚C; For Buccal Swabs, 30 days at Room Temperature. |
Causes for Rejection | Specimen improperly labeled or unlabeled, Outside of Stability window; Inappropriate collection container, Insufficient volume, Transportation requirements not met, Specimen leakage from tube, DNA extraction is repeatedly unsuccessful (up to laboratory discretion), Clotted or hemolyzed specimen (Blood only). For Buccal Swabs only; Sample is unnaturally colored, Sample is very viscous and/or contains foreign materials (e.g., food particles). |
Methodology: | Real Time PCR/ Genotyping |
Setup Days: | Monday-Friday |
Setup Times: | Day Shift |
Turnaround: | 14 Calender Days |
CPT Code(s): | 81479; 81225; 81226; 81227, 81231, 81479, 81232, 81328, 81306, 81335, 81350; and 81355 **Varies bases on Gene Target** |
(The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.) | |
use | These assays will identify alleles/genotypes in human samples obtained from provided biological materials, which will be used to determine drug metabolism and specific disease risk factors. |
Genetic Testing
Genetic testing is a type of medical test that identifies changes in chromosomes, genes, or proteins. The results of a genetic test can confirm or rule out a suspected genetic condition or help determine a person’s chance of developing or passing on a genetic disorder.
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