1 / 6 Pharmacogenomic Test
Find out how your body processes 112+ medications. UK home saliva-kit pharmacogenomic test, results in 4 weeks, GP appointment included if needed.
112+ medications screened across mental health, pain relief, statins, blood thinners, oncology and ADHD
Lab analysis at Eurofins UK on Illumina pharmacogenomic-array platforms
At-home saliva sample - no clinic visit, no fasting, keep taking your current medication
Included 30-minute GP video appointment after results, if you need one
A pharmacogenomic test (PGx) - sometimes called a DNA medication check or drug-response genetic test - analyses a small saliva sample for variants in the genes that control how your body absorbs, breaks down, and clears medication. Knowing your pharmacogenomic profile helps your doctor pick the right drug at the right dose, with fewer side effects and less trial-and-error.
Our panel screens 112 medications across 14 therapy areas including mental health, pain relief, cholesterol, cardiovascular, ADHD, oncology, infection, and immune system drugs. Lab analysis is performed at Eurofins UK on Illumina pharmacogenomic array platforms. Your results stay valid for life because your DNA doesn't change.
What pharmacogenomics actually measures
Pharmacogenomic testing focuses on a small set of genes that code for drug-metabolising enzymes (mostly the cytochrome P450 family - CYP2D6, CYP2C19, CYP2C9, CYP3A4/5), drug transporters (SLCO1B1), and drug targets (e.g. VKORC1 for warfarin, HLA-B for several immunology and HIV drugs).
Variants in these genes group people into four broad metaboliser phenotypes:
- Poor metaboliser - the drug builds up in your body; standard doses cause side effects.
- Intermediate metaboliser - slower-than-average; you may need a lower dose.
- Normal metaboliser - standard dosing works as designed.
- Rapid / ultra-rapid metaboliser - the drug clears too quickly to be effective at the usual dose; you may need a higher dose, or a different drug.
For example, around 5-10% of people of European ancestry are CYP2D6 poor metabolisers - they cannot effectively convert codeine to its active form, so codeine works poorly for pain relief. Conversely, ultra-rapid CYP2D6 metabolisers convert codeine to morphine so quickly that standard doses can become dangerous. A simple saliva test tells you which group you're in before a clinical decision needs to be made.
Why Jeen Health (vs ordering it elsewhere)
- Lab and technology - analysis at Eurofins UK on Illumina pharmacogenomic arrays.
- Direct-to-consumer pricing - £210 for the test, GP appointment included if you need one.
- No pre-test consultation needed - your kit is posted after you order. Saliva collection at home, post the kit back, results in ~4 weeks.
- Lifetime-valid report - your genome doesn't change. Use the same report whenever your GP prescribes anything new from the panel.
- Independent, not insurer-tied - your results are not shared with health insurers in the UK.
The 112 medications we screen
Our PGx panel covers drugs across these therapy areas. Some drugs listed below are licensed in other jurisdictions but not the UK - they're included because the report follows international PGx standards.
Mental health (25 drugs) - Amitriptyline, Aripiprazole, Brexpiprazole, Bupropion, Citalopram, Clomipramine, Desipramine, Doxepin, Escitalopram, Fluoxetine, Fluvoxamine, Haloperidol, Imipramine, Mirtazapine, Moclobemide, Nortriptyline, Paroxetine, Perphenazine, Pimozide, Quetiapine, Risperidone, Sertraline, Thioridazine, Trimipramine, Venlafaxine, Vortioxetine, Zuclopenthixol.
Cancer (11 drugs) - Capecitabine, Cisplatin, Fluorouracil, Gefitinib, Imatinib, Irinotecan, Oxaliplatin, Rasburicase, Tamoxifen, Tegafur, Tioguanine.
Infection (12 drugs) - Abacavir, Atazanavir, Dapsone, Efavirenz, Flucloxacillin, Flucytosine, Nevirapine, Nitrofurantoin, Primaquine, Ribavirin, Tafenoquine, Voriconazole.
Pain relief (12 drugs) - Celecoxib, Codeine, Flurbiprofen, Hydrocodone, Ibuprofen, Lornoxicam, Meloxicam, Methadone, Oxycodone, Piroxicam, Tenoxicam, Tramadol.
Heart (9 drugs) - Acenocoumarol, Carvedilol, Clopidogrel, Flecainide, Mavacamten, Metoprolol, Phenprocoumon, Propafenone, Warfarin.
Cholesterol (7 drugs) - Atorvastatin, Fluvastatin, Lovastatin, Pitavastatin, Pravastatin, Rosuvastatin, Simvastatin.
Digestive system (8 drugs) - Dexlansoprazole, Esomeprazole, Lansoprazole, Omeprazole, Ondansetron, Pantoprazole, Rabeprazole, Tropisetron.
Immune system (6 drugs) - Azathioprine, Hydroxychloroquine, Mercaptopurine, Peg-interferon alfa 2a, Peg-interferon alfa 2b, Tacrolimus.
Nervous system (9 drugs) - Brivaracetam, Carbamazepine, Diazepam, Fosphenytoin, Oxcarbazepine, Phenytoin, Pitolisant, Siponimod, Tetrabenazine.
Diabetes (4 drugs) - Glibenclamide, Gliclazide, Glimepiride, Metformin.
Bone & joint (2 drugs) - Allopurinol, Pegloticase.
ADHD (1 drug) - Atomoxetine.
Chest (1 drug) - Dextromethorphan.
Other (3 drugs) - Eliglustat, Methylene Blue, Toluidine Blue.
What's included
- At-home saliva-collection kit - posted after you order
- Lab analysis at Eurofins UK on Illumina PGx arrays
- Personalised digital report in ~4 weeks - we email you when your results are ready
- Included 30-minute GP video appointment when results land - book it from the email we send when your results are ready, if you want a clinician to walk you through any flagged medications
When NOT to take this test
A pharmacogenomic test is unsuitable for anyone whose DNA could be confused with a donor's. Specifically:
- You've had a liver or kidney transplant
- You've had a bone marrow or stem cell transplant
- You've received a blood transfusion in the last four weeks
The reason is biological: transplanted tissue and recently-transfused blood carry the donor's DNA, which can mix with your own in a saliva sample and confuse the result. After a blood transfusion, donor DNA is typically cleared within 4 weeks. After bone-marrow or solid-organ transplant, the mix is permanent - a different testing approach is needed (we can refer you to a specialist clinical-genetics service).
You'll be asked these three questions before you can complete checkout. If any answer is "yes", we'll cancel your order automatically - no payment taken - and email you with next steps.
How long do results last?
Forever. Your genome doesn't change, so the variants we report stay valid for life. Save your report - when your doctor next prescribes a drug from the panel, you can show it to them and they can adjust the choice or dose.
That said, interpretation evolves. New evidence is added to the international PGx databases (CPIC, DPWG) every year. Your report reflects the science as of the date it was issued; check back periodically with your GP if your prescription set changes substantially.
Regulatory & lab accreditation
| Standard | Scope |
|---|---|
| CE IVD-certified | Sample collection kits, reagents, DNA-extraction machinery |
| ISO 15189 | Medical laboratory quality (Eurofins UK) |
| ISO 17025 | Testing & calibration (Eurofins UK) |
| ISO 27001 | Information-security management |
| ISO 13485 | Result-interpretation algorithm + software |
| CQC registered | UK lab oversight |
| Cyber Essentials | UK cybersecurity certification |
Your saliva sample is destroyed after analysis. Your data is stored and processed in the UK and Europe.
Saliva or blood? How the two sample types compare.
The logistics, simply.
Everything you need to know about shipping, blood draw, and suitability.
Kit delivery & logistics
Kit delivery & logistics
1. Your kit is posted to you. Free delivery of your kit. Kits are currently sold out: new stock is due in mid-November 2026, and advance orders are posted as soon as it arrives. There is no pre-test consultation to wait for. Changed your mind? Return the kit unused within 30 days at no charge.
2. Return and results. Collect your sample at home using the instructions in your kit and post it back in the pre-paid envelope. Turnaround is counted from when your sample reaches the laboratory.
Sample / draw options
Sample / draw options
At-home cheek swab : At-home cheek swab kit; you collect the sample yourself and post it back.
Test suitability
Test suitability
The Pharmacogenomic Test is for UK residents aged 18 or over. It is not suitable if you have had a liver or kidney transplant, a bone marrow or stem cell transplant, or a blood transfusion in the last four weeks, because donor DNA in your sample could confuse the result. You answer three short eligibility questions before checkout.
Three steps. That's it.
Simple, clinician-supported steps to take your test with Jeen.
Order your kit
No pre-test consultation is needed. Your kit is posted to you after you order.
Consent + collect
Complete your consent form online, collect your sample at home, and post it back in the pre-paid envelope.
Results + follow-up
We email you when your results are ready, with a link to book an online GP appointment so a clinician can talk you through any flagged medications.
Compare every option we offer.
Price, turnaround and coverage side by side.
Frequently asked questions.
What is a pharmacogenomic test?
How is this different from other medication-check services?
How many medications does the test cover?
Do I need to stop my current medication before the test?
How do I prepare for the saliva sample?
How long do results take?
Can the test results change over time?
Will my health insurer get access to my results?
Who can take the test?
What happens to my saliva sample?
Is this an NHS test?
Do I have to share the results with my GP?
- Clinical Pharmacogenetics Implementation Consortium (CPIC) - cpicpgx.org
- Dutch Pharmacogenetics Working Group (DPWG) guidelines
- PharmGKB Variant Annotations - pharmgkb.org
- NHS Genomic Medicine Service - pharmacogenomics overview
- Pirmohamed et al., Pharmacogenomics: current status and future perspectives. Nat Rev Genet 24, 350-362 (2023).
- Caudle et al., Standardizing terms for clinical pharmacogenetic test results. Genet Med 19, 215-223 (2017).
Talk to a specialist.
Our team is here to help. Whether you're curious about testing, your results, or what's right for you - we're a message away.
Book a consultationThis test is currently sold out
New kits ship in mid-November 2026. You can still book in advance today - we'll post your kit as soon as the new stock arrives. Payment is taken at checkout as normal. Our Refund Policy sets out how cancellations work.
Quick check before you order
Three short questions. We have to ask because donor DNA from a recent transplant or transfusion can confuse the test - if any answer is "Yes" we can't reliably run the panel.
Donor DNA mixed with your own would make the result unreliable. If you've had a blood transfusion, you can take this test once four weeks have passed since the transfusion. After a solid-organ or bone-marrow transplant, a different testing approach is needed - please email [email protected] and we'll arrange a referral.