3 Sweat test 3 different results

Mama Bean

New member
My DD has had 3 sweat test all with 3 different results. first one was 70, second test a couple weeks later was 59 and one done last week was 22. What is going on here? How in the world do they decide which is the true number? She is having them done at a certified CF center and I think it is the same person doing the test. At least two were done by the same person. Not sure of last one as DD was in hospital and I was at work. Anyway when we saw her pulmonologist she diagnosed DD with CF and she began doing breathing treatments and CPT twice a day. Within a day or so of starting all this my DD began coughing and wheezing like I have never seen before. The Doctor also cultured her throat during this appointment and I could not figure out why as she was showing no signs of illness at this appointment. Anyway a couple of days later the results came back positive for Strep pyogenes. She spent several days in hospital where she was given antibiotics and more breathing treatments. They even used the shakie vest (VEST)thing on her. Now she is home and continues to cough and wheeze. Is all this coughing and wheezing a good thing? Was it always in there and now it is getting broken up and coming out? Or what? Advice please. Still waiting on the Ambrey Amplified test approval so I can get an answer that is for sure correct. :confused:
 

Printer

Active member
What is an "Ambrey Amplified Test approval?" It sounds like you are in denial. From what you say, DD has been diagnosed at an APPROVED CF CENTER by a CF Specialist.

Get with the program and let the CF Specialists treat her.

Bill
 
S

SarahProcter

Guest
Bill, it sounds like she IS letting the CF specialists treat her. She's also trying to make heads or tails of what her daughter's confusing sweat tests mean, and what it means when your previously-asymptomatic child develops coughing and wheezing upon starting breathing treatments. "Ambry Amplified Test approval" sounds like she's trying to get insurance to pay for the most complete Ambry genetic testing available, in order to determine her daughter's mutations. Surely everyone with CF nowadays is interesting in knowing precisely what mutations they have, in this day and age when drugs are being developed that help specific mutations and do not help others - getting this information in addition to her CF diagnosis makes perfect sense. Even trying to pin down sweat test values can be significant in terms of treatment, not just diagnosis, of CF - note that Vertex is saying that certain drug treatments may be effective in CF patients with residual CFTR function - this is often defined as a comparatively low sweat test, and/or pancreatic sufficiency. There are trials under development now specifically to test Kalydeco in people with lower sweat test values. This can be useful information.

Also, you sound like you're telling her off, when she's asking the kinds of questions that parents of newly-diagnosed kids ask because they're confused. That's not very helpful.

Mama Bean, some feedback and questions for you:

1. How old is your daughter? Sweat test results are less consistent and reliable with infants than with older children.
2. How far apart were the sweat tests done? Sweat test results can also change as a child gets older (though my understanding is, alas, that they usually go up rather than down).

With regard to the throat culture, in children who are too young to effectively cough up a sputum sample, throat cultures are used to try to detect bacteria that may be growing in the lungs. It will be a routine part of her medical care to receive throat cultures when she goes to CF clinic at her approved CF center. Detecting bacteria growing in the lungs before there is serious impact on lung functioning allows your pulmonologist to treat the infection aggressively and hopefully get rid of it before it can cause more serious damage.

With regard to coughing and wheezing more now that she is doing breathing treatments (presumably inhaler and nebulizer?) and CPT, coughing more can be a GOOD thing, as the idea is to loosen up and move the goo in her lungs. Wheezing can be an undesired side effect of hypertonic saline in some kids, or it can be a completely different issue. What treatments is your daughter doing? What does her pulmonologist say about the wheezing?

You mention that your daughter used the vest when in the hospital. Are you going through a process to obtain a vest for her for home use? If not, is there a reason why not? Especially as your kid gets older it can be much easier to effectively do CPT with a vest than manually.

Is your daughter pancreatic sufficient? Does she need to take enzymes when she eats? Do you know the results of her fecal elastase test?

I know this can all be very confusing. My kid was diagnosed based on newborn screening, and had borderline sweat test results. And even in an approved CF center, with a firm genetic diagnosis, her low sweat test numbers made the pulmonologist discuss all sorts of possibilities about "mild" CF or CRMS diagnoses, which confused me completely until I could read more and figure things out better. Stick with your CF center, and ask ask ask questions. Obviously we're not CF specialists here, and they're the ones your daughter needs to be treated by, but we can related to your confusion and are happy to talk through what you experience.

Take care!
 

Printer

Active member
"is all this coughing and wheezing a good thing?' Her Doctor has already answered that. Cough and clear your lungs.

All that she is looking for is someone to tell her the Doctor is WRONG. Also two sweat tests done at a CF Center and one done in a hospital.. Hospitals don't do the same sweat test that is done at a CF Center by a certified tech.

Bill
 

Ratatosk

Administrator
Staff member
DS had a normal 32 for his sweat test; however, genetic blood testing showed he had CF. When DS has gotten a cold or cough we've increased his CPT/vest treatments to "beat that cough out of him" -- get things up and out so as to not stagnate in his lungs. doing CPT is NOT going to hurt them. As for the for the coughing and wheezing.... DS developed bronchitis at 2 months. At the time, I was doing regular CPT 4 times a day. He was on antibiotics; however, turned out he was culturing something else. Probably picked up something at the clinic when I'd taken him in for shots and a well child visit... Was put on a different abx specifically for whatever he was culturing and it took care of it after couple days.
 

Mama Bean

New member
Thanks Sarah. in answers to your questions DD is 7 1/2 and I adopted her in China 4-13. The sweat test were all preformed at the children's Hospital here which is a CF Accredited Center. The sweat test were all done about 2 weeks apart or so. That's why I am so confused. If the same place is doing it and like I said I know 2 of them were done by the same lab tech then how can they be so different? They measured her for a vest and said they would order it if the genetic testing came back positive. However I think I will be asking for it regardless as it is so much nicer then doing CPT. She is using a nebulizer for her treatments. Pulmocort two times a day and Albuterol every 4 hours. They did run a stool sample and said it came back normal so no enzymes given. So what your saying is that if the throat culture comes back positive for strep like it did this may also be be in her lungs? The more I research Chinese people who have CF and trust me there is not much to research out there, it seems as this population seems to present differently on the genetic testing then Caucasians. Again, I am so far from knowledgeable on CF, but it says that several Chinese people tested with 2 novel mutations or something like that anyway. Anyway hoping to hear by the end of the week weather Ambry Test will receive authorization from insurance to be done.
 

Mama Bean

New member
Thanks Sarah. in answers to your questions DD is 7 1/2 and I adopted her in China 4-13. The sweat test were all preformed at the children's Hospital here which is a CF Accredited Center. The sweat test were all done about 2 weeks apart or so. That's why I am so confused. If the same place is doing it and like I said I know 2 of them were done by the same lab tech then how can they be so different? They measured her for a vest and said they would order it if the genetic testing came back positive. However I think I will be asking for it regardless as it is so much nicer then doing CPT. She is using a nebulizer for her treatments. Pulmocort two times a day and Albuterol every 4 hours. They did run a stool sample and said it came back normal so no enzymes given. So what your saying is that if the throat culture comes back positive for strep like it did this may also be be in her lungs? The more I research Chinese people who have CF and trust me there is not much to research out there, it seems as this population seems to present differently on the genetic testing then Caucasians. Again, I am so far from knowledgeable on CF, but it says that several Chinese people tested with 2 novel mutations or something like that anyway. Anyway hoping to hear by the end of the week weather Ambry Test will receive authorization from insurance to be done.
 

JENNYC

New member
Mama Bean I would be curious too and asking the same questions... :/ That is so odd. Did the Dr's give you any kind of explanation as to why they would come back so different. I am curious as to what they said could be the reason for the drastic differences.

And CF is a lot to learn but you will get the hang of it :) Just keep asking questions, and hopefully they will approve your ambry testing soon...ours took forever to get approved...at least it felt that way :) And then getting the test results back is equally as long :/ Good luck!!!
 

Aboveallislove

Super Moderator
If she doesn't need enzymes she is pancreatic sufficient and will likely benefit from kalydeco. Once you know genetics, post and folks can give you insight on that.
 
F

fel

Guest
Mama Bean,

I can't give you any answers but can say both my sons recently had sweat chloride tests with very variable results at the CHOP CF center in Phila.

The first had 70/76, 65/57, 42/43 -- the second had 70/76, 68/67, 47/47, all tests within 3 months of each other, both boys are in their teens.

If someone could explain this variability, that sure would be helpful.

Fel.
 
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