Time of test

Where possible, testing should be started within four hours of collection if the specimen was held at room temperature. If longer storage is required, testing can be started up to 24 hours later if specimens are kept refrigerated and returned again to room temperature for 15 minutes before testing.¹

(1) CLSI Procedures for the Erytrhocyte Sedimentation Rate Test: Approved Standard - Fifth edition H02-A5, VOl. 31 No 11; 2011