These are horrible, illogical, unscientific conclusions:

..."never to look for allergies in an asymptomatic patient"
and
..."research found that 8 percent of children have a positive blood test for peanut allergies, but only 1 percent have clinical symptoms."

What are these clinical symptoms? Basically they're looking for hives (or anaphylaxis).

However, there are 1,000 other symptoms that are commonly overlooked: Mood changes, metabolism changes, blood pressure & heart rate, digestion problems, etc etc...almost none of which can be easily observed in a 10 minute wellness checkup. Lab tests are your friend!

Another dangerous conclusion...
...a "food challenge [is the] the gold standard for diagnosis"

Again, food challenges are definitely useful, but for example, how would you monitor something like the endocrine system during a 10-minute food challenge in a pediatrician's office?

Blood tests are simple, inexpensive, & non-invasive (just a few drops of blood on a card, similar to a blood type test). Each test has pros & cons (and flaws), but wouldn't it be prudent for every person (every child and adult) to know this information about themselves?

Do you suffer from ADHD? depression? mood swings? Well, have you ruled out food allergies? Follow the rule of Occam's razor - some things are quick, easy, & inexpensive to rule out. If your MD doesn't know how to do this, go to a CFMP (it's usually very cheap - my insurance didn't cover it, but I got 2 kids tested for 30 things, for around $100 for both, including office visit).

In once case, an otherwise healthy adult had bad hypertension for 20 years. Turns out, it was just a food allergy. He had no idea - no hives, no history of anaphylaxis.

And for Judas sake, if you're going to give your child a vaccine with aluminum, please have them tested for aluminum allergy first. For example, does your little girl get reactions to cheap metal earrings? If so, you've already done a free skin test for metals allergy! If the blood or other test comes back positive, do not inject it in her body! If we could just get our pediatricians to follow basic scientific principles, it would cut down tremendously on vaccine reactions (and cut down on superstitions & fears as well). Quantitative science is the way to go.