Sherwin Hariri, MD, FAAAAI, FACAAI -  - Allergist

Beverly Hills Allergy

Sherwin Hariri, MD, FAAAAI, FACAAI

Allergist & Immunologist located in Beverly Hills, CA

Exhaled Nitrogen Oxide Specialist

At Beverly Hills Allergy in Beverly Hills, Dr. Hariri performs the exhaled nitric oxide (eNO) breathing test, which can help with the diagnosis and management of allergic asthma. The test measures how much nitric oxide you breathe out, and if you have high levels of it, your airways might be inflamed. If you're experiencing the signs and symptoms of asthma, inquire about the exhaled nitric oxide breathing test at Beverly Hills Allergy.

Exhaled Nitrogen Oxide Q & A

What is the exhaled nitric oxide breathing test?

During the eNO breathing test, Dr. Hariri will ask you to exhale (breathe out) into a mouthpiece. The machine measures the levels of nitric oxide in your exhale.

Why is the eNO breathing test performed?

Asthma can be challenging to diagnose. Doctors consider your medical history, signs and symptoms, the findings of a physical examination, and tests designed to measure lung function. The eNO breathing test is one of them.

The eNO test can help identify inflammation in your airway. Because your body responds to inflammation in the airway by producing an excessive amount of nitric oxide (NO), increased NO is a definite sign of inflammation in the airways.

What should I do to prepare for the eNO breathing test?

Very little preparation is required. You should take special care to avoid eating and drinking in the hour before your test and exercise, tobacco, alcohol, and allergy shots for at least 24 hours beforehand.

What can expect during my appointment?

Your appointment will be brief -- about fifteen minutes including registration -- and painless. You check in at the front desk, update your information if any changes have occurred, and a nurse or aid leads you to a clinic room.

Dr. Hariri hands you a mouthpiece and gives you simple breathing instructions. Measurements are usually taken three times to ensure consistency in your results. The test will last less than five minutes.

When will I get my results?

You receive your results during your appointment as the machine can provide an instant reading. Only a doctor -- such as Dr. Hariri -- can determine whether your results are normal or indicative of inflammation in the airway caused by asthma.

However, some factors may interfere with your eNO levels, including certain medications, illnesses, allergies, and smoking. Dr. Hariri takes that into account while reviewing your test results.

Who can perform the eNO test?

Because asthma is the direct result of allergies in most patients, allergists are trained and experienced in the diagnosis and effective treatment of the disease. Dr. Hariri at Beverly Hills Allergy offers the eNO breathing test, so call or click to book your appointment today.


We accept major insurance plans. If you don't see your provider in the list, please contact our office for more information. 

Anthem Blue Cross Blue Shield
Anthem Blue Cross of California
Blue Cross Blue Shield
CBA Blue
Health Net

Words from our patients

  • Google+

    "Very caring and knowledgable Doctor! He really knows how to treat allergies. Beautiful office btw!"

    Tina Chuldzh
  • Google+

    "Genuine and very helpful! Staff is professional and I only had to wait 5 minutes to see the doctor."

    Honor Guard Team
  • Patient Fusion

    "Dr. Hariri is a very genuine doctor who is very interested in his patients' health and answers any questions you might have so that you feel comfortable."

  • Google+

    "Competency. Compassion. Respect. Altruism. Four distinct traits that truly encompass Dr. Sherwin Hariri and his practice."

    Artin Galoosian
  • Google+

    "Dr. Hariri is a very compassionate doctor. He took his time and explained everything to me very well! I highly recommend him to all my family and friends!"

    Jackie I.
  • Yelp

    "His office looked very nice and elegant. I was able to get into his clinic immediately and the waiting time to be seen was very short."

    George M.
  • Yelp

    "Very knowledgable about food allergies. Within 15 min he figured out what I'm allergic to and testing was painless. Highly recommend."

    R-Mean P.
  • Yelp

    "Dr. Hariri was so helpful in my understanding of my seasonal allergies. He took great care of me and I would enthusiastically recommend him to anyone."

    Caroline T.
  • Yelp

    "Doctor Hariri is the BEST!!! He is a true life saver! He is compassionate and smart. I finally found a Doctor who knows how to treat my eczema!"

    Annette M.
  • Google+

    "He is awesome and really cares about the overall health of his patients. He also has a great assistant!"

    Jacob R.
  • "I had an amazing experience! I came in today as new patient for a severe rash. Dr. Sherwin and his team were more than phenomenal."{

  • "I would highly recommend Dr. Sherwin in the future to friends and family members who are seeking the assistance of an allergist in the greater Los Angeles area."

  • Square

    "I always feel cared for whenever I go to this practice. The doctor is very nice and genuinely cares for his patients. Sabrina is always pleasant and helpful as well."

  • Google+

    "I have seen many allergists in the past, and finally I walked into an office where I truly felt the doctor was not only brilliant, but also cared to listen to me."

    Alec P.
  • Yelp

    "Dr. Hariri is the best. He definitely cares about his patients and will go above and beyond. Thank you Dr. Hariri for your amazing help and guidance!"

    Holly B.
  • Yelp

    "Dr. Hariri is a genuine doctor who cares about his patients. He is very knowledgeable and smart. Thank you Dr. Hariri for everything!"

    Arpine M.
Our Locations

Choose your preferred location