IsNumeric Returns False for """150"""

The title is correct. For some reason "150" in a string line gets converted to """150""" by VB. Why? and when you use IsNumeric it returns false. It is within a string in a text file.

"TestMode-Nothing.mss","1","150","N/A","N/A","6.081","503.659"

ary=line.Split(",")
If IsNumeric(ary(2) Then
 'Do some stuff
end if

What could be simpler? When viewed in the watch window ary(2) = """150""". I tried a RegEx pattern, (?<=,)(\d{2,3})(?=,), but that would return no matches. Look behind and look ahead decided not to work. So I thought to escape the commas but that didn't change anything.

Where do the additional " come from? How can I get that value?

Thanks,