sentences:  The district court ordered LabCorp to pay $4.7 million in damages and permanently enjoined LabCorp from conducting future such tests at physicians' requests.The decision was upheld by the United States Court of Appeals for the Federal Circuit, which further stated that doctors were 'directly infringing' Metabolite's patents each time such a test is ordered and interpreted.LabCorp argued that the correlation is a principle of nature, and therefore the patent should never have been granted.