| CASE REPORT |
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| Year : 2020 | Volume
: 13
| Issue : 3 | Page : 250-253 |
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High creatine kinase-muscle brain levels greatly exceeding total creatine kinase levels in a 2-month-old infant
Vatsala Khurana, Elvia Jamatia, Reena Rani, Binita Goswami
Department of Biochemistry, Maulana Azad Medical College and Lok Nayak Hospital, New Delhi, India
Correspondence Address:
Dr. Elvia Jamatia
Department of Biochemistry, Maulana Azad Medical College and Lok Nayak Hospital, New Delhi - 110 002
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/kleuhsj.kleuhsj_31_20
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The measurement of creatine kinase muscle brain (CK-MB) by the method of immunoinhibition has various drawbacks, which are posing as a hindrance in its role as a sensitive diagnostic indicator. A 2-month-old infant presented with symptoms of difficulty in breathing and cough. A chest X-ray done showed an incidental finding of a cardiac anomaly, and ultrasonography cranium showed a well-defined cystic lesion seen in the frontal horn of the bilateral lateral ventricle and signs of a resolving hemorrhage. The CK-MB level (761U/L) was greatly exceeding the CK levels (427U/L). This raise in CK-MB may be due to the presence of CK-BB or macro-CK in the plasma. Electrophoresis of the CK enzyme is, therefore, the best way to resolve the shortcomings of immunoinhibition. Macro-CK and CK-BB should hence also be kept in mind when the physician makes a diagnosis on the basis of such a laboratory report. |
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