[Macro-CK type 1: a methodological study approach and its clinical significance].

Description of an analytical procedure in order to show the atypical-CK carriers that simulate an abnormal raising of CK-MB circulating levels in dosages for immune inhibition. This procedure was applied to two samples taken from patients of such a type, immune form neoplastic and cardiac pathology. A systematic dosage of a "real" MB isoenzyme is desirable in all the cases of very raised CK-MB activity.