{"id":4458,"date":"2021-09-15T16:17:05","date_gmt":"2021-09-15T04:17:05","guid":{"rendered":"https:\/\/www.awanuilabs.co.nz\/central\/wellington\/?page_id=4458"},"modified":"2025-05-05T14:18:47","modified_gmt":"2025-05-05T02:18:47","slug":"mycoplasma-genitalium","status":"publish","type":"page","link":"https:\/\/www.awanuilabs.co.nz\/central\/wellington\/for-referrers\/microbiology\/how-do-i-diagnose\/mycoplasma-genitalium\/","title":{"rendered":"Mycoplasma genitalium"},"content":{"rendered":"\n<p><strong>Infection:<\/strong> <em>Mycoplasma genitalium<\/em> infection; M gen<\/p>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\">Brief description:<\/summary><div class=\"ab-accordion-text\">\n<ul>\n<li>A non-culturable bacteria that can cause sexually transmitted infection.<\/li>\n\n\n\n<li>Often carried asymptomatically, but can cause urethritis, cervicitis and possibly PID.<\/li>\n\n\n\n<li>Not well known, but likely more common than gonorrhoea, less common than chlamydia.<\/li>\n\n\n\n<li>The availability of testing varies between regions \u2013 check with your local laboratory.<\/li>\n<\/ul>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\">Did you know?<\/summary><div class=\"ab-accordion-text\">\n<p>Significance in many situations still not well understood.<\/p>\n\n\n\n<ul>\n<li>Asymptomatic anorectal colonisation is common in men who have sex with men (MSM).<\/li>\n\n\n\n<li>Uncertain whether causes proctitis or epididymo-orchitis in men.<\/li>\n<\/ul>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\">Who should I test?<\/summary><div class=\"ab-accordion-text\">\n<p>Second line investigation in people where chlamydia and gonorrhoea have been <strong>excluded \/ already treated<\/strong>, and have:<\/p>\n\n\n\n<ul>\n<li>Recurrent or persistent <strong>urethritis<\/strong> that has not resolved with doxycycline treatment for non-gonococcal urethritis.<\/li>\n\n\n\n<li><strong>Cervicitis<\/strong> or <strong>PID<\/strong> that has not responded to standard treatment.<\/li>\n<\/ul>\n\n\n\n<p>Treatment can be <strong>complicated<\/strong>. <\/p>\n\n\n\n<ul>\n<li>Commonly <strong>resistant<\/strong> to first line treatment (<strong>azithromycin<\/strong>). <\/li>\n\n\n\n<li>Discussion with a Sexual Health physician or microbiologist recommended <strong>prior to testing <\/strong>for this reason (many laboratories will decline testing without this).<\/li>\n<\/ul>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\">Test of choice:<\/summary><div class=\"ab-accordion-text\">\n<p>Request <strong><a href=\"https:\/\/scg.labapps.nz\/#\/WEL\/details\/27688\" target=\"_blank\" rel=\"noreferrer noopener\"><em>M. genitalium <\/em>NAAT<\/a><\/strong><\/p>\n\n\n\n<p><strong>NAAT<\/strong> on a <strong>vaginal<\/strong> <strong>swab<\/strong> (self- or clinician-collected) or <strong>endocervical<\/strong> swab. The <strong>Aptima<\/strong> system can be used; chlamydia and gonorrhoea NAAT can be performed on <strong>same<\/strong> <strong>swab<\/strong>.<\/p>\n\n\n\n<ul>\n<li>Excellent <strong>sensitivity<\/strong> &#8211; a <strong>negative<\/strong> test on a well-collected sample makes the diagnosis <strong>very unlikely<\/strong><\/li>\n\n\n\n<li>Excellent <strong>specificity<\/strong> &#8211; a <strong>positive<\/strong> test <strong>reliably detects the organism, <\/strong>but doesn\u2019t necessarily imply it is the cause of symptoms<\/li>\n\n\n\n<li>First void urine is <strong>second line in women<\/strong> due to lower sensitivity.<\/li>\n<\/ul>\n\n\n\n<p><strong>NAAT <\/strong>on<strong> first void urine<\/strong> or <strong>urethral<\/strong> <strong>swab<\/strong> are the only accepted samples in men.<\/p>\n\n\n\n<ul>\n<li>Similar sensitivity and specificity to above.<\/li>\n<\/ul>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\">Tests to avoid\/specialist tests:<\/summary><div class=\"ab-accordion-text\">\n<ul>\n<li>Outside the context of contact tracing,<strong> avoid<\/strong> testing in <strong>asymptomatic<\/strong> people, including <strong>anorectal testing in MSM<\/strong>, as asymptomatic carriage is common and of <strong>uncertain significance<\/strong>.<\/li>\n\n\n\n<li>Detection in the oropharynx\/throat is <strong>very uncommon<\/strong>, so oropharyngeal swabs are not accepted.<\/li>\n<\/ul>\n<\/div><\/details><\/div>\n\n\n\n<div class=\"wp-block-atomic-blocks-ab-accordion ab-block-accordion\"><details><summary class=\"ab-accordion-title\">Other considerations:<\/summary><div class=\"ab-accordion-text\">\n<p>Many laboratories will test for <strong>macrolide (azithromycin) resistance<\/strong> +\/- <strong>fluoroquinolone resistance<\/strong> when testing for <em>M. genitalium<\/em>. Interpretation and management of results can be complex and should be in conjunction with a Sexual Health physician.<\/p>\n<\/div><\/details><\/div>\n","protected":false},"excerpt":{"rendered":"Infection: Mycoplasma genitalium infection; M gen","protected":false},"author":18,"featured_media":0,"parent":4222,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-left-sidebar.php","meta":{"footnotes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mycoplasma genitalium &#8211; Awanui Labs - Wellington<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.awanuilabs.co.nz\/central\/wellington\/for-referrers\/microbiology\/how-do-i-diagnose\/mycoplasma-genitalium\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mycoplasma genitalium &#8211; 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