Table 1. Influence of High Activities of Total CK and Dilution of Serum on CK-MB as Measured by the Electrophoretic Fluorometric Method

1269 7 135 ± 13 1510 6 164 ± 17 1920 5 320 ± 35 We recently observed a serum showing a definite LDH 6 band with an increase in CK-BB. The patient, a 77year-old man, had suffered a concussion. The serum was sent to us from the hospital to which he had beeh admitted. Serum total CK was 368 U/L (normal 0-178). Total LDH 2010 U/L (normal 100-225). Cellulose acetate electrophoresis (Helena system) to resolve isoenzymes ______________ of CK showed 76% MM, 6% MB, and CK-MB, cv, 18% BB. uii The (Helena) LDH isoenzyme electrophoresis showed six well-differentiated bands: LDH1 10.4%, LDH2 14.9%, LDH3 18.0%, LDH4 19.1%, LDH5 30.2%, and LDH6 7.4%. CK-MB, CV, n U/L % Serum diluted #{189} with saline