Allergy - Xylocaine Anaesthetic Drug Test

Xylocaine or Lidocaine is a local anesthetic drug to numb tissues of a specific area. It's also used for treating ventricular tachycardia as well as for performing nerve blocks. Patients with a history of adverse reactions to a specific local anesthetic drug may be termed as allergic. Before determining a suitable pain control technique, the healthcare professional must need to confirm the allergic reactions. A proper dosage is important to administer to restrict unwanted side effects. The Xylocaine allergy reaction is characterized by cutaneous lesions, edema or anaphylactoid reactions. Although allergies as a result of sensitivity to Xylocaine or lidocaine HCI are not common but needs to be treated carefully. The test is conducted on a blood sample to estimate the IgE antibodies level.

The blood sample is examined through a Fluorescence Assay. For this, no special preparation is required before the test. But the doctor must be aware of the patient's complete medical history along with present medications. If the patient has certain allergies, then the healthcare professional must know about that to avoid any misdiagnosis.

Xylocaine is used as a local anesthetic drug. It's also administered as direct injection or infusion to treat emergency situation resulted from acute myocardial infarction or open heart surgery. The levels must be examined to confirm sufficient therapeutic result as well as to avoid toxicity and allergic reactions. The normal range for Allergy- Xylocaine Fluorescence Assay Blood for Immunoglobulin E Antibodies is elevated (>100kU/l) when the person is allergic to the specific substance. This is relevant for all genders and ages groups.

The Fluorescence Assay sensitivity test for Xylocaine is performed on a blood sample.

• An elastic band is wrapped around the upper arm, mostly around 3 inches above the puncture site.
• Usually, the superficial vein lying within the elbow pit is used as the collection site. The area is cleaned with 70% alcohol before injecting the syringe.
• A disposable syringe is held in line with the vein while pulling the skin area tight. The syringe is pushed into the vein with a small thrust.
• The required amount of blood is drawn and then the wrap is removed. Usually, 1 mL of serum is preferred for the test
• A cotton ball or a gauze pad is placed on the site.
• The blood is immediately transferred to a red top tube with proper anticoagulant/clot activator or preservative.
After collecting the sample, next process included the detection of allergen-specific Immunoglobulin E.