Holiday Closure Notice: Happy Independence Day
The laboratory will be closed on Saturday, July 4th in observance of Independence Day. Normal operations will resume on Monday, July 6th. Please do not ship blood specimens or time-sensitive samples on Friday, July 3rd, as holiday delays may affect specimen integrity. For questions, contact Customer Service at (972) 887-3444 or customerservice@omnihealthdx.com.
Wishing you a safe and happy Fourth of July!
Lab Tests

Pharmacogenomics Testing
Overview
Pharmacogenomics (PGx) is the study of how genetic variations affect an individual’s response to medications. Our CLIA-certified laboratory uses advanced genotyping to evaluate multiple drug–gene interactions, identifying how a patient metabolizes, transports, or responds to specific drugs.
With PGx testing, providers can:
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Optimize drug selection and dosing
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Reduce adverse drug reactions
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Improve treatment efficacy
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Avoid trial-and-error prescribing
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Support chronic disease management with precision medicine
Our PGx Panels
Cardiovascular – 13 Genes
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Genes: ABCG2, CYP2C9, CYP2C19, CYP2D6, CYP3A4, CYP4F2, SLCO1B1, VKORC1, APOE, F2, F5, ITGB3, MTHFR
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Therapeutic Classes Covered: Statins, anticoagulants, antiplatelets, angiotensin II receptor antagonists, diuretics, antianginal agents, antiarrhythmics, beta blockers
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Drug Examples: fluvastatin, rosuvastatin, warfarin, losartan, torsemide, clopidogrel, ranolazine, flecainide, propafenone, carvedilol, propranolol, atorvastatin, simvastatin
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Risk Management:
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APOE-Type III Hyperlipoproteinemia
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F2-Thrombosis
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F5-Thrombosis
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ITGB3-Platelet Reactivity
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MTHFR-Hyperhomocysteinemia‐Thrombosis
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Diabetes – 3 Genes
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Genes: CYP2C8, CYP2C9, SLCO1B1
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Therapeutic Classes: Meglitinides, thiazolidinediones
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Drug Examples: repaglinide, pioglitazone, rosiglitazone, nateglinide
Gastroenterology – 7 Genes
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Genes: ABCB1, CYP2C9, CYP2C19, CYP2D6, MTHFR, NUDT15, TPMT
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Therapeutic Classes: Antiemetics, proton pump inhibitors, antifolates, thiopurines
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Drug Examples: ondansetron, dronabinol, lansoprazole, omeprazole, dolasetron, methotrexate, azathioprine, mercaptopurine
Hematology / Oncology – 9 Genes
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Genes: CYP2C8, CYP2C9, CYP2D6, DPYD, F2, F5, MTHFR, NUDT15, TPMT
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Therapeutic Classes: Taxanes, protein kinase inhibitors, anti-estrogens, fluoropyrimidines, hemostatic agents, antifolates, thiopurines
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Drug Examples: paclitaxel, erdaftinib, tamoxifen, gefitinib, capecitabine, fluorouracil, avatrombopag, eltrombopag, methotrexate, azathioprine, mercaptopurine
Infectious Disease – 3 Genes
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Genes: CYP2B6, CYP2C19, DPYD
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Therapeutic Classes: Anti-HIV agents, antifungals
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Drug Examples: efavirenz, voriconazole, flucytosine
Neurology – 3 Genes
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Genes: CYP2C9, CYP2C19, CYP2D6
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Therapeutic Classes: Anticonvulsants, benzodiazepines, antidementia agents, other neurological agents
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Drug Examples: fosphenytoin, phenytoin, brivaracetam, phenobarbital, primidone, clobazam, flibanserin, donepezil, galantamine, tetrabenazine, valbenazine
Pain – 7 Genes
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Genes: COMT, CYP1A2, CYP2B6, CYP2C9, CYP2C19, CYP2D6, OPRM1
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Therapeutic Classes: Opioids, NSAIDs, muscle relaxants
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Drug Examples: morphine, tizanidine, methadone, celecoxib, carisoprodol, codeine, hydrocodone, oxycodone, tramadol, fentanyl
Psychiatry – 14 Genes
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Genes: ADRA2A, ANKK1, COMT, CYP1A2, CYP2B6, CYP2C19, CYP2D6, DRD2, GRIK4, HTR2A, HTR2C, OPRM1, ANKK1, MTHFR
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Therapeutic Classes: Anti-ADHD agents, antidepressants, antipsychotics, benzodiazepines, antiaddictives
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Drug Examples: dexmethylphenidate, methylphenidate, bupropion, amphetamine, clozapine, olanzapine, amitriptyline, citalopram, sertraline, paroxetine, venlafaxine, vortioxetine, aripiprazole, haloperidol, risperidone, diazepam, naltrexone
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Risk Management:
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ANKK1: Antipsychotic‐Induced Hyperprolactinemia, Tardive Dyskinesia, Weight Gain
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MTHFR: Hyperhomocysteinemia ‐ Depression
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Sample Collection & Process
Specimen Types: Buccal swab
Turnaround Time: Typically 5–7 business days from specimen receipt
Report Includes:
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List of detected variants
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Impact on drug metabolism (poor, intermediate, normal, rapid, ultra-rapid metabolizer status)
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Clinical recommendations based on CPIC guidelines
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Color-coded drug response indicators (e.g., use as directed, use with caution, avoid)
Kit Instructions
Included: Buccal swab kit, transport tube, biohazard bag, test requisition form, prepaid return label
Steps:
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Avoid food, drink, or gum for 30 minutes before collection
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Rub swab firmly along inner cheek for 30–60 seconds
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Place swab in transport tube and seal
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Complete requisition form and place in pouch
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Return via prepaid label or arranged courier
FAQs
Q: Who benefits from PGx testing?
A: Patients starting new medications, those with a history of side effects, or those on multiple prescriptions.
Q: How does PGx improve treatment?
A: It tailors medication selection and dosing to a patient’s genetic profile, improving efficacy and safety.
Q: Will results affect current prescriptions?
A: In many cases, yes—providers may adjust medications or doses based on results.
Q: Is testing covered by insurance?
A: Coverage varies; many insurers reimburse PGx testing with supporting medical necessity documentation.
Q: How long are results valid?
A: Genetic results do not change over time and can be used for life.
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