Showing posts with label testing. Show all posts
Showing posts with label testing. Show all posts

Wednesday, November 11, 2015

Stunning One Year Test Results

Yesterday, I read off James's test results, starting with the environmentals which were at the top, "Normal, normal, normal, slightly high, normal - wait a minute, these are all normal." I scrolled down to the food results, "Normal, normal normal."

Background


James, 13, starting seeing Dr. Li after multiple life threatening reactions, starting when he was 10 years old. Despite low IgEs, his allergies were progressing, including having OAS to multiple fruits and vegetables. He had had life long GI issues, chronic hives, and a cough after exercise that could lead to throwing up.

Test Results


Last years results are from July 2014, except for the tree nuts, which are from Sept. 2014.

Food

Wheat: 1.61 to 0.18 
Soy: 1.27 to 0.15
Lentil: 0.50 to <0.10
Peanut: 1.50 to 0.30
Walnut: 0.31 to <0.10
Hazelnut: 0.46 to <0.10
Pistachio: 0.97 to 0.24
Almond: 0.64 to <0.10

Environmentals


Bermuda Grass: 2.36 to 0.24
Rye Grass: 3.28 to 0.37
Mugwort: 1.23 to <0.10
Russian Thistle: 2.87 to 0.44
Elm: 2.27 to 0.18
Cockroach: 1.54 to 0.27
Juniper: 1.24 to 0.18
Cedar: 0.63 to <0.10

Total IgE: 65.7 to 30.1


Questions


Where do we go from here?


I'm not really sure. I am waiting for the official report to come in the mail and then I will send them to Dr. Li. My first priority is to be able to reduce James's Allegra, because he cannot have any food challenges if he still is taking it. In a twist (because nothing is every simple), he had minor hives twice last week. I believe he had a virus which caused them, but it's not perfectly clear that was the case. So, I was supposed to start reducing his Allegra and didn't. Hopefully, by the time of our next consult, he will still be hive free and we can begin that process.

What did you do?


I've blogged on here a few times about James's protocol: here, here, and here. This relates our experience at "TCM camp" this summer.

His protocol has changed more often than I have blogged. His current protocol is:

Mei Huang 5 Tea: 5 capsules 2 times a day
Mu Lian Tea: 5 pills 2 times a day
Good Mood Tea: 5 pills 2 times a day
Shi Zhen Tea 1A: 8 capsules 2 times a day
Shu Chuan Tea: 6 capsules 2 times a day
Cream 3VB: 2 times a day application, after bath and shower
Huang Lian: 2 tsp in bath once a day
Niu Bang Zi: 2 packets in bath once a day

Remember however that Dr. Li's protocols are personalized so these are only examples of James's protocols, not prescriptions that can be generalized.

Other than doing our best to eat healthy (and he eats plenty of junk - don't get the wrong idea), we don't do anything else: no probiotics, no cranberry juice, nothing supplementation wise. I am not saying there aren't benefits. This was just our choice.

My Own Thoughts


Having his blood work done was scary. There was a real chance that we wouldn't see progress in the first year and I know I would have been disheartened. The treatment is, as I have always tried to relay, intense. It has taken a lot of dedication and money.

I was hoping for improvement, but never expected such complete, positive results. I have some speculation as to why, but it is complete speculation.

1. His IgEs were low to being with, even though those low numbers had resulted in anaphylaxis. Basically, he didn't have as far to go.

2. Even though he was older, his immune system was obviously in flux, in the wrong way, when we began. Maybe it was "open" to being shifted in the other direction.

In Between Here and There


We are kind of in a weird place right now - in the best possible way. I am going to FABlogcon this weekend, and is James even really allergic anymore? I am not complaining. I plan to enjoy myself. But, like always, I would love to be at the end. I have already allowed myself daydreams of wheat bread and dim sum. I will keep posting at times and hopefully will be able to share successful food challenges in the not too distant future, but I hopefully soon, I will be wrapping things up here.

I would be happy to answer anyone's questions. 





Friday, November 6, 2015

Results

But not what you think ...


October 23rd, James had a cyst removed from his forehead. I went in thinking it was no big deal, right up until the dermatologist said, "You'll have the biopsy results in two weeks," - not the words you want to hear.

I kept this mostly under my hat, but Wednesday, the dermatologist called with the results - benign. Everything else I'm sharing had paled in comparison to having that behind us.

Hives

They're back. The disappointment is huge. We are not talking about a serious case - a few on his lower leg that resolved on their own. But, the implications are vast. I never did get to try to reduce his Allegra - that would have been this Saturday. No food challenges will be possible until he has no hives without Allegra. I'm grateful we will be returning to see Dr. Li in December.

Blood test

It's drawn, this Monday. I am hoping to be able to report some good progress, whether or not we are able to challenge. Hopefully, next Monday we will have results. I had a hard time deciding what to test for this round. James has some allergens tested that are possibly false positives and I questioned whether or not to include them. 

As it turned out, I had an (insurance) limit of 25 allergens. It sounds like (is) a lot, but included environmental. He has nine environmentals tested, peanut, wheat, soy, lentils (that's 13). Running a tree nut panel (minus Brazil nut because that would be one too many) fills up the 25 limit. I excluded melon and mango (OAS related) and pea and white bean. James's allergist feels the legumes are likely false positives. I included lentil as a representative of the class as it is the one he has had GI problems with the longest (his whole life).

Hopefully, early next week I will be able to come back with positive results!

Monday, July 13, 2015

Food Fear Factor

"He's just anxious."


How many of us know someone who has the flu and afterwards, for a time, avoids the food they ate  before the flu started? Logically, they know that pasta dinner did not cause the flu, but physiologically, their stomach turns every time they look at a plate of pasta.

Now imagine that instead of throwing up, that plate of pasta made it difficult to breathe, caused you to be rushed to the emergency room, ended with shots, and tests, and medications, and more tests. Is it surprising that a child looks at everything on the table that night and says, "I don't want to eat that."?

Allergic Living recently published an article, "5 Reasons Patients Shun Critical Food Allergy Testing." Number three on the list was fear of the oral test.

Allergists have (among other things) the job of determining what is safe to eat.  Lives and, depending on the circumstances, nutrition, can be improved by broadening the diet. But, allergists can also undermine the confidence of patients by dismissing fear as "just anxiety."

Our Experience:


James does not test allergic to apple. It was one of the foods he was tested for OAS for. In fact, it was the food that caused a reaction that made the allergist think he had OAS, yet the testing was negative. Since the testing was negative and OAS generally results in minor reactions, the allergist recommended we test apple at home. We haven't. James has no interest in eating apple (he does eat cooked apple). I don't care. He eats plenty of fruits. If he never eats another apple, he is not missing out nutritionally.

Last October, right before our first appointment with Dr. Li, James's allergist recommended a food challenge for soy and wheat. Dr. Li suggested we wait. James implemented a two allergist agreement rule for any food challenge so we are waiting. We would have waited on Dr. Li's request anyway. The time of waiting has been good for James. It has given him time to think about adding in the food, about what a challenge would be like, pass or fail. There are times when anticipation increases anxiety, but this has been about working towards a goal, with each swallowed pills and slather of cream, he takes back some control.

So, if all the tests look good in October, then those are food challenges he will complete. Soy and wheat, unlike apple, would make a huge difference in all of our lives. And, I expect, when the time comes, we will all be a little anxious. But, having taken time and allowed confidence to re-grow, I don't think it will be unmanageable.

Advice to Parents




You know your child. You need to make a careful consideration of all the factors and come to a decision. It's not a time to allow outside pressure from anyone - allergist, family members, strangers writing blogs - influence you, however well meaning they are.

1. Take your time. 
2. Work with your allergist.
3. Don't be afraid of taking your child to a therapist if needed. According to this toolkit from the National Eating Disorders Association, presence of a food allergy is a risk factor for an eating disorder. Obviously, most people with food allergies do not develop an eating disorder, however, if you notice that your child has developed extreme fear or avoidance behavior, professional intervention may be needed.
4. Celebrate your successes. I find this can be a one step forward, two steps back process, so we celebrate every step forward.

Has your child had and food based fear? What have you found helps?



Monday, May 18, 2015

Clinical Trial vs Private Treatment #FAREcon


I had the privileged of volunteering at the FARE National Food Allergy Conference this past weekend, which allowed me to attend many fantastic presentations. Over the next few blog posts, I will summarize some of the research presented.

Out of my swirling my, one fact stood out. Dr. Baker, the CEO of FARE stated that the FDA had told DBV, the maker of the Viaskin Peanut Patch and ARC, the maker of CODIT, that they each needed studies of 8,000 people in order to get approval of their products.

8,000!

Staggering.

The LEAP Study, which was fairly widely commended for its size had 640 infants enrolled. In 2014, DBV announced results of its IIb study, "the largest clinical trial in peanut allergy desensitization ever completed" - 221 patients.

How will they ever get 8,000 patients each?

Why We Chose Private Practice

We briefly considered enrolling in a clinical trial. James qualified to be evaluated for a clinical trial for OIT to wheat at Stanford. My husband, in particular, was interested in considering this route. So, why did we decide against it?

  1.  As I shared in my first post, we chose a different treatment. My husband, like many, had heard of OIT through the news. The trial, for us, opened the conversation, but OIT was not the right treatment for our family. I would not recommend choosing a treatment only because a trial is available.
  2. We would have had to travel to Stanford every other week, for two years, about a 6-7 hour drive. Unless you think no one would ever be willing to do this, you should read this article of people who did a drive of the same time for the same reason.
  3. The placebo. I will admit that I didn't want the risk of James being administered the placebo. We were told upfront that we would be offered what they could at the end of the trial for treatment. I don't know what that means, because I did not investigate the trial any further.

Benefits of a Clinical Trial

  1. You have access to some of the best medical care and minds. 
  2. You have access to treatments and testing that aren't yet available outside of trials.
  3. You are helping to advance science and the community as a whole.

8,000 Patients

I have so much respect and appreciation for those families that do participate in clinical studies. Despite the perception that it is "free," because they don't pay for the medicine, the saying, "there is no free ride," certainly applies - time off for appointments, traveling, stress, emotional wear and tear. Thank you.



Monday, May 11, 2015

"That's No Ordinary Rabbit"


We are in Food Allergy Awareness Week. Technically, rabbits are food. However, I will not be speaking of them in that context.

Two weeks ago, a dear friend's husband had a life-threatening reaction to their pet rabbit. He had been having asthma problems which were related to the rabbit for some time. The rabbit had been relegated to the garage. Even so, this day, when he went into the garage, he had trouble breathing, used his asthma medication, found no relief, and eventually, was taken to the hospital. He was given epinephrine, Benadryl, and steroids. He left with a prescription for Epi-pens, steroids, and a refill for his inhaler, but, as is so familiar, very little instructions or directions on what to do next.

Here is my advice, having been down a similar path, somewhat generalized, for those who may walk this path again:

Avoid your Allergen

This is an emotional blow, different when you are talking about a beloved pet versus a food, but either way, those words, which seem simple on the face, are actually quite difficult. Quoting Dr. Dave Stukus, "Families told to get rid of their pets by their allergists find themselves a new allergist, not a new pet." And I know when James got his test results back, my second thought (after looking at the food) was to be relieved that he was not allergic to the dogs and cats.

Epi-Pens: Carry Them, Keep them Together

Obviously, a rabbit being easier to avoid than most allergens, it may seem like you don't need them with you always. There's a few reasons I would argue that with even a seemingly easy to avoid allergy, you always need your epi-pens with you:

  1. It can take months for your environment to be fully clean of the proteins from pet, even with thorough cleaning. Regarding mammalian proteins in an article about anaphylaxis from a horse allergy: "It is necessary to remember that the allergen levels decrease slowly over several months after pet removal." Gao et al, Wao Journal, Aug. 2009
  2. Other people own pets and allergic proteins are clingy. I, myself, have experienced going to the Urgent Care (not allergy related) only to be treated from the door way because the doctor's pet allergies were too severe to treat me. Note to self: Use tape roller before heading to Urgent Care?
  3. There is always the possibility that instead of the rabbit, the reaction was caused by the hay the rabbit was being fed. Grass (hay being a form of grass) is actually a more common allergy than rabbit. And a more common trigger.
Here is a link for a co-pay coupon for the Epi-pen.

See a Board-Certified Allergist

An allergist will be able to sort through the history and do the testing to determine what the allergy actually is. He will also be able to give an emergency action plan, clear for the entire family.

Rodent Allergies

This is information I found specific to rodent allergies.

What information would you share for someone newly diagnosed?

 

Monday, April 27, 2015

Food Allergy Testing: Down the Rabbit Hole


“Have you guessed the riddle yet?” the Hatter said, turning to Alice again.“No, I give it up,” Alice replied: “What’s the answer?”“I haven’t the slightest idea,” said the Hatter” 


Usually, when we go to the doctor, have a blood test, roughly a week later, we receive the results and there's a diagnosis: your cholesterol is high, you have anemia, etc. These are screening tests.

Food allergy tests, both skin and blood, are not screening tests. A positive test does not mean you are allergic. In fact, both skin and blood tests are wrong about 40-60% of the time (called a false positive). False negatives are less likely, although possible, in both tests.

The only time food allergy tests should be performed is when you are having a reaction to a food. And the only way they can be interpreted properly is in the context of your history.

“That's the reason they're called lessons," the Gryphon remarked: "because they lessen from day to day.” 


So, now you have your results, and you have been given numbers, classes, wheal sizes, and the larger then numbers the more severe the allergy, right? Of course not. But, here is where the blood test numbers can come in useful (and you can eliminate some of the false positive concerns), the larger the numbers, the more likely the test is accurate. That is, the more likely you are to truly react. The likelihood that one will react is called the positive predictive value. This is from medscape here:

  • Egg: In children > 2 years of age, IgE level 7 kU/L (98% PPV); in infants ≤ 2 years, IgE level 2 kU/L (95% PPV)
  • Milk: IgE level 15 kU/L (95% PPV)
  • Peanut:IgE level 14 kU/L (95% PPV)
  • Fish: IgE level 20 kU/L (95% PPV)
  • Tree nuts: IgE level 15 kU/L (95% PPV)
  • Soy: IgE level 30 kU/L (73% PPV)
  • Wheat: IgE level 26 kU/L (74% PPV)
As you may remember, James failed his oral food challenge to hazelnuts and his Ige is 0.46 (depending on what standard you follow, positive is either >0.35 or >0.01. Our lab says above 0.35, so he is barely positive).


And, here is the lesson, barely positive can mean an anaphylactic reaction. Negative can even result in an anaphylactic reaction (rarely). The test is meant to guide the allergist with your history in diagnosis. It is not diagnostic in an of itself.



“Why, sometimes I've believed as many as six impossible things before breakfast.” 


What about IgG testing? IgG has no place in testing for allergies or intolerances. Some researchers and OIT doctors have actually begun measuring it (research wise) as a good measure, as in, as IgG rises,  your ability to tolerate the food. IgG shows that you have been exposed to the food. There have been studies showing that children who out grown their milk allergies have higher IgG milk levels and that IgG levels rise throughout OIT


“Would you tell me, please, which way I ought to go from here?""That depends a good deal on where you want to get to."


We seem to be on the cusp of the future as far as testing goes.

At Stanford, there has been news of two new tests in development. The link can explain it better than I can, but one uses a heel prick to test for 90 allergens using white blood cells. The other looks at DNA. Used together, they can also be used to determine the severity of an allergy. Now, of course, families are told to treat every allergy as potentially life threatening.

At UConn, they are also developing a food allergy test, specifically for peanut, interestingly in addition to being a food allergy test, the researchers are hoping to use the test to get a better look into the biology of a reaction.

Of course, my personal favorite, Dr. Li is developing the Basophil Activation Test (BAT). Because James's IgEs are all low, an alternate test for him, for people like him, is necessary. The idea of him undergoing another food challenge relying on a test that is, quite frankly, inadequate, is terrifying.

That said, parents are fundraising for a clinical study to help move forward Dr. Li's work on the BAT. The total is not completely updated on the page; we need slightly less than $5,000 more. If you are able to contribute anything, it would be greatly appreciated. We are trying to get the last bit raised by the end of this month.

Great news from this afternoon (April 27th) that the study has been fully funded! Thank you to everyone who has contributed and everyone who supports those with food allergies in any way.