This tool is ONLY valid for those with a suspected penicillin allergy (ie. to penicillin, amoxicillin, ampicillin)
Has it been five years or less since your reaction?
When you had the reaction, was there swelling or a formal diagnosis of anaphylaxis?
When you had the reaction, was there any rash that looked like this?
When you had the reaction, was any treatment given besides stopping the penicillin? If you are unsure, say "Yes".
CALCULATED RISK:
To more accurately determine if you are appropriate for a challenge, answer the following:
Is there any chance you are pregnant?
Are you currently taking a beta-blocker (ie. bisoprolol)?
Have you been formally diagnosed with congestive heart failure, coronary plaque, heart valve issues, or an uncontrolled arrhythmia?
Do you have any of these lung issues?
Uncontrolled asthma Severe COPD Interstitial lung disease
Do you have any of the following?
Not well controlled ezcema Not well controlled allergic rhinitis (seasonal allergies) Hives or skin rashes normally Any "Mast cell" disorders A current infection

What penicillin caused the reaction?

Why was the penicillin given?

Have you used any penicillins without issue prior to your first reaction?

How soon after starting the penicillin did you have a reaction?

More specifically, when was your last reaction?

What was your reaction? If you did not have any of these, it is quite unlikely to be an allergic reaction.

Rash Breathing difficulty Fainting or loss of consciousness Swelling Other

What other symptoms did you have?

Diarrhea Formally diagnosed kidney injury Vomiting Formally diagnosed liver injury

What did the rash most look like? (you may need to scroll horizontally to see the 3 options)

Was there any involvement of your mouth or genital area?

How was your reaction treated?

Have you had any type of penicillin since the incident?

What other allergies do you have (food or environmental or drug)?

Have you ever had a formally diagnosed episode of Anaphylaxis?

Are you appropriate for a challenge?

You are likely safe for oral challenge without referral to allergist. If an oral challenge is considered, it must be done in a medically monitored setting with appropriate tools and standby medications. Please see your family doctor or allergist for more details.

-- PDF button not ready. Please enter in penicillin name above. --

PDF referral link.
Desktop: Right-click this button and open in new tab
Mobile: long press on this button and download link