Check Input To Be An Integer

I am trying to test a users input to be an integer. Is there a simple function that i can use. Here is a simplified version of my attempt.

dim numTestNumber
numTestNumber = 6
if isNumeric(numTestNumber) = false then
Response.Write "The input must be numeric"
Response.End
end if

if Cint(numTestNumber) then
Response.Write "The Number is an Integer"
else
Response.Write "The Number is not an integer"
end if

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Integer Check

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If checkMaxAttempt = "2" AND checkScore1 >= "70" Then
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'last attempt check
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