T.R.U.E. Test

T.R.U.E. Test (Thin-layer Rapid Use Epicutaneous Test) is a ready-to-use allergen patch test system containing allergen-infused polyester patches. When applied to the skin, it helps identify specific substances that trigger allergic contact dermatitis by producing a localized, controlled reaction.

Dosage by Body Weight

Applied to healthy skin of the back by a healthcare professional. The panels must remain in place for 48 hours, during which the patient must avoid moisture and excessive sweating. The patch is removed at 48 hours, and interpretations of the skin reaction are made at 48 hours and again at 72 to 96 hours after application.

  1. Body Weight
    Below 5 kg
    Dose
    Contraindicated
    Frequency
    Not applicable
    Tracking Notes
    Safety and efficacy not established in infants.
  2. Body Weight
    5-7 kg
    Dose
    Contraindicated
    Frequency
    Not applicable
    Tracking Notes
    Safety and efficacy not established in toddlers.
  3. Body Weight
    8-10 kg
    Dose
    Contraindicated
    Frequency
    Not applicable
    Tracking Notes
    Safety and efficacy not established.
  4. Body Weight
    11-15 kg
    Dose
    Not routine
    Frequency
    Single diagnostic application
    Tracking Notes
    Only indicated for patients 6 years of age and older. Diagnostic testing does not use weight-based dosing.
  5. Body Weight
    16-20 kg
    Dose
    One system (Panels 1.3, 2.3, and 3.3)
    Frequency
    Single diagnostic application
    Tracking Notes
    Applicable only if the pediatric patient is 6 years or older. Dosing is a single application of the patch panels, not calculated by weight.

Formulation

Transdermal PatchDiagnostic Kit

Purpose

A diagnostic patch test indicated for use as an aid in the diagnosis of allergic contact dermatitis in persons 6 years of age and older.

Generic Name

Allergen patch test

Scheduled Drug

Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.

Alternatives

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.