A study to compare the diagnostic accuracy of GeneXpert MTB/RIF/assay and its comparison with liquid culture in clinically suspected cases of genital tuberculosis attending outpatient department of tertiary center

Anu Pathak, Divya Yadav, Urvashi Verma, Yogita Gautam


Background: Tuberculosis is a major health issue globally despite a declining trend in mortality with effective diagnosis and treatment, an estimated 10.4 million persons developing active TB each year with 1.33 million deaths. Objective of this study was to evaluate role of GeneXpert MTB/RIF/assay in diagnosis of female genital tuberculosis in suspected cases of tuberculosis.

Methods: It was a cross sectional study done in department of obstetrics and gynecology in S. N. Medical college Agra for a period of 2 year (July 2017 to October 2019). 70 cases were selected from OPD of department of obstetrics and gynecology, S. N. Medical College Agra who met the inclusion and exclusion criteria after taking proper consent. In all selected cases endometrial biopsy sample was taken using endometrial biopsy curette in premenstrual period. All samples of endometrial biopsy were taken under all aseptic precaution from both corneal ends, anterior and posterior wall and lower part of uterus using endometrial biopsy curette and sample was collected in two separate sterile vials having normal saline and was sent for GeneXpert MTB/RIF/assay and liquid culture simultaneously.

Results: Out of total 70 clinically suspected cases of female genital tuberculosis in between 20-45 years of age cough with expectoration 94% was the most common respiratory symptom followed by fever 81%, weight loss 56% and anorexia 54%. Prevalence of genital tuberculosis in active pulmonary tuberculosis patients was 30%. Irregular menstruation, vaginal discharge and pelvic pain were present in 69%, 60% and 52% patients respectively.

Conclusions: The overall sensitivity of CBNAAT was 22% and specificity was 77%. The overall sensitivity of liquid culture was 28% and specificity was 71%.


Endometrial biopsy, Genital tuberculosis, GeneXpert, Liquid culture

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