Allergen skin test (for allergic rhinitis, sinus diseases, asthma or food allergy)
Performed by prick test or intradermal skin test.

  • Long-acting antihistamine eg. Xyzal, Claritin (Loratidine), Allegra(Fexofenidine), Zyrtec(Cetirizine) and Atarax( Hydroxyzine) should be withheld for 7 days before.
  •  Short-acting antihistamine and H2 blockers eg. Benadryl, cold medicines, Zantac (Ranitidine), Pepcid ac(Famotidine) and Tagamet (Cimetidine)should be withheld for 48-72 hours.
  •  Nasal spray Astelin, Patanase and allergy eyedrop should be withheld for 2 days .
  •  Tricyclic antidepressant eg. doxepin, elavil, or amitriptyline needs to be withheld for 7-10 days.

Allergen patch test
(for contact dermatitis, cosmetic and metal implant allergy)

  • Off oral steroid and not using steroid cream when tested

Pulmonary function test


  • Withhold your rescue inhaler on test day

Allergy shot

Service provided for established patients. Patient comes can walk-in for this service.

Sublingual desensitization

Xolair treatment for moderate to severe asthma and chronic urticaria

Aspirin desensitization for ASA-sensitive chronic sinusitis

Penicillin and drug allergy test; drug skin test, drug or food challenge, drug desensitization is performed when clinically indicated.