Heavy black tea consumption and elevated CA 19-9 and CA 125 levels. A case report on a patient with ovarian endometriotic cysts

Sophie Pils; Chiara Paternostro; Marius E Mayerhoefer; Alexander Reinthaller; Michael Feichtinger

doi:10.1080/09513590.2018.1564743

Heavy black tea consumption and elevated CA 19-9 and CA 125 levels. A case report on a patient with ovarian endometriotic cysts

Sophie Pils, Chiara Paternostro, Marius E Mayerhoefer, Alexander Reinthaller, Michael Feichtinger

Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology · 2019 · vol. 35(6) , pp. 478–480 · doi:10.1080/09513590.2018.1564743 · PMID:30727790 · W2913662126

article OA: closed CC0 ⤵ 1 in-corpus citation

View on OpenAlex View on PubMed View at publisher

⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This case report describes a patient with suspected ovarian endometriotic cysts whose high black tea consumption correlated with elevated CA 19-9 and CA 125 levels, which normalized after tea discontinuation.

One-sentence paraphrase of the abstract; not a substitute for reading it. No clinical advice. How this works

Abstract

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.

My notes (saved in your browser only)

Condition tags

mesh:D004715

MeSH descriptors

CA-125 Antigen CA-19-9 Antigen Endometriosis Membrane Proteins Ovarian Diseases Ovarian Neoplasms Tea Adult Biomarkers, Tumor Biomarkers, Tumor CA-125 Antigen CA-19-9 Antigen Diagnosis, Differential Endometriosis Endometriosis Endometriosis Female Humans Membrane Proteins Ovarian Diseases

Citation neighborhood (sparse)

Too few in-corpus citations on either side for a chart; here are the lists.

Cites (3)

Cited by (1)

Bio-nanocomposite based highly sensitive and label-free electrochemical immunosensor for endometriosis diagnostics application 2021

References (15)

Abnormally High Values of CA 125 and CA 19-9 in Women with Benign Tumors via openalex
Comparison of the clinical value of CA 19-9 versus CA 125 for the diagnosis of endometriosis via openalex
Risk factors of epithelial ovarian carcinomas among women with endometriosis: a systematic review via openalex
W2126044351 via openalex
W2138221667 via openalex
W2165142087 via openalex
W2168587693 via openalex
W2172766517 via openalex
W2471841104 via openalex
W2566737373 via openalex
W2567457360 via openalex
W6654383 via openalex
W2584792093 via openalex
W2021912047 via openalex
W2121289368 via openalex

Cited by (1)

Bio-nanocomposite based highly sensitive and label-free electrochemical immunosensor for endometriosis diagnostics application 2021

Source provenance

europepmc: last seen: 2026-06-04T01:30:01.192114+00:00
openalex: last seen: 2026-06-10T17:14:06.276822+00:00
pubmed: last seen: 2026-05-13T22:23:01.605684+00:00

License: CC0 · commercial use OK

[1] Risk factors of epithelial ovarian carcinomas among women with endometriosis: a systematic review 2016

[2] Comparison of the clinical value of CA 19-9 versus CA 125 for the diagnosis of endometriosis 2009

[3] Abnormally High Values of CA 125 and CA 19-9 in Women with Benign Tumors 2010