How to Set Postman Test Equal to This or That

I am writing an API test in Postman, and I would like it to succeed if a Number is returned or the string "NA". Based on the

pm.test('Qty returned is number', () => {
  pm.expect(typeof parseInt(pm.response.json().qty)).to.be.not.equal('NaN');
});

Writing as two separate tests, one will pass and one will fail.

How can I code this exception into a single test?