$strUserName = "user1"
$strUser = get-qaduser -SamAccountName $strUserName
$strUser.memberof

$OuDomain = "OU=xyz,OU=abc,OU=test"
Get-QADUser -SamAccountName $(Get-Content c:\Output\users3.csv) -searchRoot $OuDomain -SizeLimit 0 -DontUseDefaultIncludedProperties | ? {[string]$_.memberof -notmatch 'TestGroup'}