It is sometimes presumed that a child has a particular drug allergy based on an experience or incident in the past.
It can be difficult to assess if this incident was actually as a result of an allergy or if the symptoms may in fact be from the disease/condition for which the patient had been receiving the drug.
Blood tests to confirm a diagnosis are limited to only a small amount of drugs and these blood tests sometimes do not detect an allergy even when it is present.
Therefore, the only definitive means to confirm allergy is to challenge the patient to the drug again.
These drug challenges can be safely carried out on Ward 7 at Wycombe Hospital.
A member of staff from Ward 7 will contact you by telephone to arrange a suitable date for the test and answer any of your questions. The test should take approximately 3 hours so please make suitable arrangements to allow for this.
There is no preparation required for the test, however it is important that your child is well and has not recently taken any allergy medication.
The challenge should NOT go ahead if:
If any of the above apply please contact Ward 7 on 01494 425506 to arrange another date.
You will need to be on Ward 7 at Wycombe General Hospital by 9:30am on the date of the test. When you arrive your child will be allocated a bed and their vital signs (temperature, pulse etc.) will be taken. Their named nurse will introduce themselves to you.
They will be examined by a Doctor.
The test involves your child drinking gradually increasing doses of the medicine suspected of causing the reaction. In between and after the doses they will be observed for any signs or allergic reaction. (see over)
If by the end of the test there has been no reaction then they are not allergic to that drug.
Your GP and referring Doctor will be informed of the result of the test.
Mild-Moderate Allergic Reaction
Stay with the child. Call for help. Give oral antihistamine if available
Severe – Life Threatening Allergic Reaction (ANAPHYLAXIS)
Keep child calm and still. Call for Emergency Help i.e. 999.
Give Adrenaline by autoinjector if available.