%0 Case Reports
%T Heavy black tea consumption and elevated CA 19-9 and CA 125 levels. A case report on a patient with ovarian endometriotic cysts.
%A Pils S
%A Paternostro C
%A Mayerhoefer ME
%A Reinthaller A
%A Feichtinger M
%J Gynecol Endocrinol
%V 35
%N 6
%D Jun 2019
%M 30727790
%F 2.277
%R 10.1080/09513590.2018.1564743
%X In this case report, we present a case of false positive CA 19-9 and CA 125 levels in a patient with suspected endometriotic cysts. The patient is a 34-year-old nulliparous woman with heavy black tea consumption and elevated CA 19-9 and CA 125 levels. After discontinuation of black tea intake and careful exploration of other possible factors, CA 19-9 and CA 125 levels dropped markedly. As a conclusion, heavy black tea consumption can lead to false positive results of elevated CA 19-9 and CA 125 levels.