NOWDiagnostics (NOWDx) develops and manufactures the First To Know® Syphilis Test as well as other diagnostic tests. Its patented approach enables virtually any immunological assay to be accurately performed in one step using a small amount of capillary blood, yielding results in minutes. With over 89 patents issued and pending, NOWDx’s First To Know and ADEXUSDx® product lines are available in markets worldwide.


Founded in 2013, with headquarters and manufacturing in Springdale, Arkansas, NOWDx envisions a world where people have greater access to in-home testing with results in minutes. NOWDx is committed to changing healthcare by providing accessible, affordable, and accurate testing for all.

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  • Events April 18, 2025

    NOWDx to attend the 2025 Minnesota Statewide Conference on HIV June 10-13 in Minneapolis

    NOWDiagnostics (NOWDx), the manufacturer of the First To Know® Syphilis Test, will be attending the 2025 Minnesota Statewide Conference on HIV June 10-13 in Minneapolis. Visit our booth to see the First To Know® Syphilis Test firsthand – the over-the-counter in-home syphilis test that delivers an accurate result in just 15 minutes. For more conference…

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  • Events April 18, 2025

    NOWDx to attend STI Engage 2025 June 3-5 in Phoenix, Arizona

    NOWDiagnostics (NOWDx), the manufacturer of the First To Know® Syphilis Test, will be attending STI Engage 2025 June 3-5 in Phoenix, Arizona. Visit Booth #209 to see the First To Know® Syphilis Test firsthand – the over-the-counter in-home syphilis test that delivers an accurate result in just 15 minutes. For more conference details, visit the…

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  • Events April 16, 2025

    NOWDx to attend NASTAD’s 2025 Annual Meeting May 18-21 in Washington, DC

    NOWDiagnostics (NOWDx), the manufacturer of the First To Know® Syphilis Test, will be attending NASTAD’s 2025 Annual Meeting May-18-21 in Washington, DC. Visit our booth to see the First To Know® Syphilis Test firsthand – the over-the-counter in-home syphilis test that delivers an accurate result in just 15 minutes. For more conference details, visit NASTAD’s…

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