Interfering Effect of Black Tea Consumption on Diagnosis of Pancreatic Cancer by CA 19-9

J Gastrointest Cancer. 2017 Jun;48(2):148-150. doi: 10.1007/s12029-016-9855-z.

Abstract

Purpose: The study aims to determine the possible effects of black tea consumption on the level of CA 19-9 antigen in the human body.

Methods: The level of CA 19-9 was measured in 270 healthy individuals who consumed heavy amounts of black tea.

Results: About 43.3 % of involved individuals were revealed to have elevated levels of CA 19-9. Males with high values of CA 19-9 represented the greatest number of involved individuals. The cutoff value of high levels of CA 19-9 in all individuals was ranged 69-105 U/ml.

Conclusions: Consuming heavy amounts of black tea could be considered an important interfering factor that affects the levels of CA 19-9. The cutoff or predictive value of CA 19-9 in heavy-consuming people of black tea was determined.

Keywords: Black tea; CA 19-9; Pancreatic cancer.

Publication types

  • Review

MeSH terms

  • Adult
  • Aged
  • Biomarkers, Tumor / analysis
  • Biomarkers, Tumor / blood
  • Biomarkers, Tumor / metabolism
  • CA-19-9 Antigen / analysis*
  • CA-19-9 Antigen / blood
  • CA-19-9 Antigen / metabolism
  • Camellia sinensis / chemistry*
  • Female
  • Healthy Volunteers
  • Humans
  • Male
  • Middle Aged
  • Pancreatic Neoplasms / blood
  • Pancreatic Neoplasms / diagnosis*
  • Predictive Value of Tests
  • Sex Factors
  • Tea / chemistry
  • Tea / metabolism*

Substances

  • Biomarkers, Tumor
  • CA-19-9 Antigen
  • Tea