RT Journal Article SR Electronic T1 An evaluation of the Lancer Coagulyzer in the measurement of the one-stage prothrombin time. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 231 OP 236 DO 10.1136/jcp.29.3.231 VO 29 IS 3 A1 L M Rowlands A1 A C Lawrence YR 1976 UL http://jcp.bmj.com/content/29/3/231.abstract AB An evaluation of a photoelectric clot timer, the Lancer Coagulyzer, in measuring the one-stage prothrombin time has been carried out. The machine is considered to provide reliable results on correctly taken samples without interference by plasma bilirubin, only rarely failing to detect clotting in turbid plasma using a wide range of thromboplastins. The apparatus is useful where there is a sufficient number of samples to be tested.