passages.id: split_6_test_374_passage
passages.type: progene_text
passages.text: The run - to - run precision was between 1.2 and 3.7 % and between 6.2 and 8.6 % , the average recovery of glutaric acid in urine and serum samples was 96 and 103 % with the QMF and QIT instrument , respectively .