Only in countries that are allowed to differentiate on the basis of lab tests. Which is not the case where I practice.<p>If a lab result is outside the normal range and a patient has a reason for it to be outside the normal range, that&#x27;s fine. If a patient has a deviation that is related to their presenting complaint, that&#x27;s fine too. If a patient has an unexplained deviation which is not related to the presenting complaint, well, there&#x27;s a 1 in 20 chance that the variation is statistical only. So you use your clinical judgement. is this a patient who requires outpatient follow-up and repeat, or is this an abberation?