U.S. doctors online nowAsk doctors free
CT
A 29-year-old female asked:

my allergy testing even for saline was +1-, but some foods came out + and -. should i still trust the test?

1 doctor answer3 doctors weighed in
Dr. John Chiu
Dr. John Chiu answered
Allergy and Immunology 57 years experience
Yes: provided the tests were done properly and the allergens were not outdated. When the test result is questionable, it is usually unimportant. If you have had problem with a food but the test is negative, then a challenge test may be needed if you cannot avoid that food.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month
Last updated Apr 2, 2015

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.