How early does home PT pop up?

So my friend called me this morning saying she thinks she's pregnant. (all of her other friends are) well she said she took a home PT and it popped up hours later. Says she Took another today and came out positive. But then she said she went to the hospital and her results came back that she's a week pregnant? I thought with a home PT it was like impossible to show up when you're that early??

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