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  4. I noticed that Quest has recently significantly narrowed the thyroid antibody reference range to less than nine, while the LabCorp reference range is still less than 34. Any thoughts on still following the lab range or is a functional range needed?

I noticed that Quest has recently significantly narrowed the thyroid antibody reference range to less than nine, while the LabCorp reference range is still less than 34. Any thoughts on still following the lab range or is a functional range needed?

Dr. Amy Nett: Yeah, I noticed that too, recently, and I don’t know if, I haven’t had a chance to follow up with Quest. I don’t know if they’re using a slightly different methodology or why they decided to narrow that reference range. So that’s something, let me make a note of that and let’s see, I don’t know, I was trying to copy and paste it. So AJ, I don’t know if we can get that copy down so Chris or I can follow up on that. But we’ll look into that because it’s a great question. I noticed Quest did that and they love it when labs spontaneously change their reference ranges without any explanation. So we’ll look into that.

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