We report a case of unexplained and persistently elevated ASAT activity in serum. This appeared to be due to a macro-enzyme of ASAT, as was demonstrated by protein-A-Sepharose treatment of the serum sample. Although macro-ASAT seems to be clinically irrelevant, unexplained raised ASAT activity without acknowledgement of its macroenzyme nature may lead to unnecessary diagnostic procedures.
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| http://dx.doi.org/10.1016/0300-2977(95)00095-x | DOI Listing |
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