Patch testing for contact allergy cost in the UK: what you pay privately (2026)

Private patch testing applies small amounts of common allergens to the back for several days to find out whether contact allergy is causing an itchy or persistent rash, and is carried out in dermatology clinics.

Because we could not confirm a published price for patch testing for contact allergy, this page does not offer a figure. Each provider sets its own price, so the practical task is to ask several for an itemised estimate and compare what each covers.

Small chambers containing allergens are taped to the back and left for two days, then removed for a first reading, with a further reading a couple of days later. You bring any products you suspect.

Ask whether your own products and workplace exposures can be tested and what that adds to the quote.

Patch testing is useful for rashes that persist or keep returning and might be caused by contact with substances such as nickel, fragrances, preservatives or rubber chemicals. It finds delayed-type allergy, which is different from the immediate allergy tested by skin prick tests.

A positive result needs interpretation, because a reaction does not always explain the rash. The clinic should link results to your products and work exposures and advise on avoidance.

A single guide figure for patch testing for contact allergy can mislead, because the final amount depends on factors like these.

• Series of allergens: a standard series differs from extended or specialist series for particular jobs.

• Number of visits and readings: usually application, a reading and a final reading.

• Dermatologist involvement and report.

• Own products: testing personal products adds time.

• Consultation before and after.

Providers define a package differently, so two quotes are only comparable once you line up what each covers. The table lists what is typically in and what is often billed separately for this procedure.

Insurers usually cover patch testing on dermatologist referral for suspected contact dermatitis.

Insurers often agree a procedure code and a fee ceiling in advance. Self-pay patients should ask whether instalment finance is offered and what the total repayable would be, as the representative rate and terms differ by lender.

NHS dermatology offers patch testing for suspected contact dermatitis, with waits depending on service.

NHS care is free at the point of use, and for non-urgent consultant-led treatment the standard is 18 weeks from referral. You also have the right to choose where you are referred in England. Local waits differ, so ask what applies near you.

Keep the back dry and avoid heavy exercise during the test, with a short course of treatment if a reaction occurs.

No one plans for things to go wrong, but a short conversation about extra costs now can save difficulty later.

• Patches can cause itching or a flare and need careful avoidance of water and sweating, and a positive result does not always explain symptoms.

• A widespread severe rash with fever or blistering needs urgent medical care.

Quotes only compare fairly when they cover the same things. Put these questions to every provider you approach.

• Which allergen series is quoted?

• How many visits are included?

• Can my own products be tested?

• Is a consultation included?

• Will I receive one price covering the hospital, the consultant and the anaesthetic, or several bills from different parties?