Product image of Kontrola Dodatnia Prick Test Hal Allergy (Histamine Dihydrochloride) supplied by GNH India

Kontrola Dodatnia Prick Test Hal Allergy

Active Ingredient:
Histamine Dihydrochloride
Origin:
EU

Kontrola Dodatnia Prick Test Hal Allergy (Histamine Dihydrochloride)

Histamine dihydrochloride, the active ingredient in Kontrola Dodatnia Prick Test Hal Allergy, is a histamine presented as a solution for skin prick test for cutaneous use. It induces a controlled wheal-and-flare reaction that serves as a positive control in allergy skin testing.
GNH India supplies Kontrola Dodatnia Prick Test Hal Allergy as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals and clinics worldwide.

Manufacturer / TM Owner

Hal Allergy B.V.

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Indications & Clinical Uses

Kontrola Dodatnia Prick Test Hal Allergy is used in allergy diagnostics to verify skin prick test reactivity.

  • Positive control for skin prick testing: confirms that the test system and patient skin respond appropriately to histamine.
  • Standardization of allergen testing: provides a reference reaction to compare against patient‑specific allergen extracts.
  • Quality assurance in allergy labs: ensures consistency of test performance across batches and sites.

How It Works

  • Histamine dihydrochloride binds to H1 receptors on cutaneous mast cells, triggering degranulation and release of mediators that cause vasodilation and increased vascular permeability. This results in a localized wheal-and-flare response, which is measured to confirm the functional integrity of the skin prick testing procedure.

Side Effects

The following adverse reactions may be observed after application of the histamine control solution.

Common Side Effects

  • Localized itching or burning at the test site.
  • Mild redness or swelling around the puncture area.
  • Transient wheal formation larger than expected.

Serious or Rare Side Effects

  • Severe systemic allergic reaction (anaphylaxis).
  • Extensive urticaria beyond the test site.
  • Cardiovascular changes such as hypotension or tachycardia.
  • Respiratory distress or bronchospasm.

Precautions & Warnings

When using Kontrola Dodatnia Prick Test Hal Allergy, follow these safety measures.

  • Patient screening: verify no known hypersensitivity to histamine before testing.
  • Test site selection: avoid areas with skin disease, infection, or recent irritation.
  • Observation period: monitor the patient for at least 20 minutes after application.
  • Emergency preparedness: have resuscitation equipment and antihistamines readily available.
  • Documentation: record the size of the wheal and any adverse reactions.
  • Store at below 25°C: keep in the original container, protect from moisture and direct sunlight.

Avoid Interactions

Histamine control solutions may interact with other agents that affect histamine pathways.

Major Interactions (Avoid)

  • Antihistamines (H1 blockers): can suppress the wheal response, rendering the control ineffective.
  • Mast cell stabilizers: may reduce histamine release and alter test results.

Moderate Interactions (Monitor Closely)

  • Beta‑adrenergic agonists: may modestly diminish skin reactivity.
  • Corticosteroids (topical or systemic): can attenuate the wheal size.
  • Certain antidepressants (e.g., tricyclics): may influence histamine metabolism.
  • Alcohol consumption: may increase skin vasodilation and affect response magnitude.

Frequently Asked Questions

Kontrola Dodatnia Prick Test Hal Allergy is a histamine‑based solution used as a positive control in skin prick testing. It confirms that the patient's skin and the testing equipment are responding correctly, providing a reference reaction against which allergen extracts are compared.

Histamine dihydrochloride activates H1 receptors on cutaneous mast cells, causing them to release mediators that produce a localized wheal‑and‑flare reaction. This predictable response serves as a benchmark to validate the sensitivity of the skin prick test.

The amount of solution applied is determined by the prescribing clinician or laboratory protocol. Typically, a few microliters are placed on the skin using a standardized lancet, but the exact volume should follow the specific testing guidelines.

Safety data for histamine dihydrochloride in pregnancy or lactation are limited. Because the product is applied topically in a controlled test setting, it is generally considered low risk, but clinicians should evaluate each case individually and follow local regulatory advice.

To place an order, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Histamine dihydrochloride is the most widely accepted positive control because it produces a consistent, dose‑dependent wheal. Alternative controls, such as saline or glycerin, do not elicit a reliable reaction, making histamine the preferred standard for validating skin prick test performance.

Store the solution at temperatures below 25 °C in its original container. Protect it from moisture, direct sunlight, and extreme temperature fluctuations. Ensure the vial is tightly sealed to maintain sterility until use.

A small drop of the histamine solution is placed on the patient's forearm or back, and a sterile lancet is used to prick the skin through the drop. The reaction is read after 15–20 minutes, measuring the wheal diameter to confirm test validity.

The primary serious risk is a systemic allergic reaction, including anaphylaxis, although this is rare with the low doses used. Immediate monitoring and availability of emergency medication are essential to manage any unexpected severe response.

Patients with a known hypersensitivity to histamine, severe cardiovascular disease, uncontrolled asthma, or those taking high‑dose antihistamines that could mask the reaction should not undergo testing with this control. Clinicians must assess contraindications before proceeding.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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