Drug Allergy
How to prepare
You can eat and drink normally before the test.
No special preparation needed.
Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.
Wear a loose sleeve so the sample can be taken easily from your arm.
How it works
About this test
The drug allergy test checks your blood for IgE antibodies against commonly used medicines, such as certain antibiotics and painkillers. It helps find out which medicine may be causing allergic reactions.
Why is this test done?
- Find which medicine caused a past allergic reaction
- Plan safe medicines before surgery or treatment
- Investigate rashes or swelling after taking medicines
Symptoms — when should you get tested?
- Rash, itching or hives after a medicine
- Swelling of lips, eyes or face
- Breathlessness or wheezing after a dose
- Fever with rash after starting a new drug
Normal range
Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.
If your result is high
A positive result for a drug means you have IgE antibodies to it and may react to it. Your doctor will advise avoiding it.
Common reasons- Allergy to penicillin-group antibiotics
- Allergy to other antibiotics or painkillers
How is the test done?
- 1Book online
Choose your slot for home collection or a visit to our centre.
- 2Blood sample taken
A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.
- 3Tested in our lab
Your barcoded sample is tested on automated machines with strict quality checks.
- 4Report on WhatsApp
A pathologist checks the result and the report reaches you on WhatsApp and email.
Frequently asked questions
Not always. Some drug reactions are not IgE-based, so your doctor will also go by your history.
No fasting is needed for this test. You can eat and drink normally.
Your report is usually ready in 24-48 hrs after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.
Please call our team to confirm whether home sample collection is available for your location and test.
This test needs a blood sample. No special preparation needed.