Pharmacogenetic testing FAQ
Find clear answers about pharmacogenetic testing, also called PGx testing, including sample collection, medication reports, clinician review, privacy, cost, and important limitations.
PGx testing looks for selected genetic variants that may affect how your body processes or responds to certain medications. It does not tell you which medication is universally “best,” and it should never be used by itself to start, stop, or change treatment.
Contact the prescribing clinician before changing a dose, stopping a prescription, or starting an alternative. Seek urgent medical care for a severe reaction or other emergency rather than waiting for genetic testing.
Key facts about PGx testing
Sample
The current workflow may use a saliva sample or a cheek swab. Follow the exact collection instructions supplied with your kit.
Purpose
The test may identify selected gene–medication relationships that can add information to a prescribing or medication-review discussion.
Clinical review
A prescriber, pharmacist, or qualified clinician should review the report with your complete medication and health history.
What pharmacogenetic testing can tell you
What is pharmacogenetic testing?
Pharmacogenetic testing examines selected genetic variants that may affect the way a person metabolizes, transports, or responds to certain medications. The report can add information to clinical decision-making when the tested gene and medication have a supported relationship.
Is pharmacogenetics the same as pharmacogenomics?
The terms are often used interchangeably. “Pharmacogenetics” commonly refers to how individual genes influence medication response, while “pharmacogenomics” can describe the broader study of many genes and drug response.
What is a reasonable reason to consider PGx testing?
A reasonable starting point is a medication-related question for which relevant gene–drug evidence exists. Examples may include planning treatment, reviewing an unexpected response, considering certain side effects, or adding context to a medication review. A clinician should help determine whether testing is relevant to the specific medication and situation.
Can PGx testing diagnose a medical or mental-health condition?
No. PGx testing does not diagnose depression, anxiety, ADHD, pain disorders, heart disease, cancer, or another condition. It examines selected genetic factors related to medication handling or response.
Does PGx testing cover every medication?
No. A panel covers only the genes, variants, and medications described for that test. Evidence is stronger for some gene–drug relationships than for others, and many medications do not have established PGx guidance.
Will the test identify the “best” medication for me?
No. A report may help a clinician interpret selected gene–medication relationships, but it cannot choose the best treatment on its own. Diagnosis, symptoms, treatment history, age, kidney and liver function, other medications, allergies, preferences, cost, and clinical judgment still matter.
Before and after you place an order
What sample does PGx testing require?
The current service may use saliva or cells collected with a cheek swab, depending on the testing workflow. Use only the collection method and materials supplied with your order.
Is the sample collection painful?
Saliva and cheek-swab collection are noninvasive. Read the kit instructions before collecting because food, drink, smoking, gum, mouthwash, or collection timing may affect the required process.
Should I stop medication before collecting my sample?
No medication should be stopped solely for sample collection unless the prescribing clinician gives that instruction. PGx testing examines inherited DNA, not the amount of medication currently present in the body.
How do I return the sample?
Package and return the sample using the instructions and return address supplied with the kit. Return requirements can vary, so do not use an address or packaging from another order.
When does laboratory turnaround begin?
Published laboratory turnaround normally begins after an acceptable sample and all required information reach the laboratory. Kit delivery and sample-return transit are separate. Check the applicable product or order page for the current estimate.
What happens if the sample is unsuccessful?
The team will explain whether recollection is required. Replacement-kit, shipping, recollection, or retesting charges may apply when a problem is related to collection, labeling, sample quality, storage, or return handling.
Using PGx results responsibly
What information may appear in a PGx report?
Depending on the panel, the report may list tested genes and variants, an inferred phenotype such as a metabolizer category, relevant gene–medication associations, evidence or guidance references, and points for clinician discussion. Review a sample report before ordering.
Can I change medication based only on my PGx report?
No. Do not start, stop, substitute, or change a dose based only on the report. The prescribing clinician must consider the result with your current medications, medical history, symptoms, treatment response, and other clinical factors.
Who should review the report with me?
The best reviewer is usually the clinician who prescribes or manages the relevant medication. A pharmacist, clinical pharmacologist, genetic counselor, or another professional with PGx experience may also help interpret the findings.
Does a “normal” result mean a medication will work?
No. A result without an identified concern does not guarantee effectiveness or prevent side effects. Genes are only one part of medication response, and the panel does not test every possible variant or clinical factor.
Does a flagged result mean I cannot use that medication?
Not necessarily. A flagged association may lead a clinician to review dosing, monitoring, alternatives, or the strength of the evidence. The correct action depends on the medication, indication, genotype, guidelines, and your clinical circumstances.
Should I share the report with all of my healthcare providers?
Share it with clinicians or pharmacists involved in prescribing and medication review when it is relevant. Keep your own copy because genetic findings generally do not change, although scientific interpretation and prescribing guidance can evolve.
What a PGx result does not guarantee
Can two PGx tests give different results or recommendations?
They can differ because laboratories may test different genes or variants, use different methods, apply different evidence thresholds, or present interpretations differently. Compare the actual panel and methodology rather than assuming all PGx tests are equivalent.
Does PGx testing detect every relevant genetic variant?
No. A panel detects only the variants included in the validated assay. A negative or typical result does not rule out other genetic factors that may influence medication response.
Can non-genetic factors change medication response?
Yes. Age, health conditions, kidney and liver function, pregnancy, smoking, diet, adherence, drug interactions, dose, and other factors may affect response. These are reasons clinical review remains necessary.
Is PGx testing useful in an emergency?
No. PGx testing is not an emergency service. Call emergency services or seek urgent medical care for trouble breathing, severe swelling, fainting, a serious medication reaction, overdose, or another urgent concern.
Do my results change over time?
Your inherited DNA generally does not change, but report interpretation can. New evidence, updated guidelines, revised medication labels, or improved laboratory methods may change how an older result is understood.
Can PGx testing prevent all side effects?
No. Testing cannot predict or prevent every adverse effect. Many side effects are not explained by the genes tested, and some occur for reasons unrelated to genetics.
Practical questions before ordering
How much does PGx testing cost?
Cost depends on the test panel, laboratory, ordering pathway, shipping, clinician involvement, and whether another service is included. Review the Pricing page and confirm the total before payment.
Will insurance cover the test?
Coverage is not guaranteed. It may depend on the insurer, plan, medication, medical indication, ordering clinician, laboratory, network status, and prior-authorization rules. Confirm directly with the insurer before relying on reimbursement.
Can I use HSA or FSA funds?
Eligibility can depend on the service, documentation, and account rules. Check with the plan administrator before purchase when HSA or FSA eligibility affects your decision.
How is my genetic information handled?
Personal information and samples may need to be shared with the laboratory and service providers involved in collection, processing, payment, report delivery, or support. Read the Privacy Policy for the current practices and limitations.
Who can access my report?
Access depends on the report-delivery workflow and the permissions you provide. Protect account credentials and report links, and share the report only with people you authorize.
Can a child have PGx testing?
Pediatric testing requires appropriate parent or guardian authorization and should be connected to a clear clinical question. A pediatric prescriber or pharmacist should determine whether the result is relevant to the child's medication plan.
Helpful pharmacogenetic testing pages
Review the main service, intended use, workflow, and medication-response focus.
Follow the process from ordering and saliva or cheek-swab collection to laboratory processing and report access.
Preview the structure and language of a medication-focused PGx report before ordering.
Learn why individual genes may appear on a report and why their meaning depends on the medication involved.
Review clinician- and pharmacist-focused information about interpreting PGx reports in context.
Use a practical checklist to prepare medication details and questions before testing or report review.
Ask before ordering or changing treatment
Contact the team for questions about the test workflow, sample collection, report access, pricing, or support. Contact the prescribing clinician for medication-specific decisions.
Include the test name and order number when available. Do not send a full genetic report or sensitive medical information through an unsecured contact form unless instructed to do so.
