Good day, ladies and gentlemen. Welcome to the Teleflex First Quarter 2018 Earnings Conference Call. At this time, all participants are in a listen-only mode. Later, there will be a question-and-answer session and instructions will follow at that time. (Operator Instructions) As a reminder this conference call is being recorded.
I would now like to turn the conference over to Jake Elguicze, Treasurer and Vice President of Investor Relations. Sir, you may begin.
Thank you, operator, and good morning, everyone, and welcome to the Teleflex Incorporated first quarter 2018 earnings conference call. The press release and slides to accompany this call are available on our website at www.teleflex.com. As a reminder, this call will be available on our website and a replay will be available by dialing 855-859-2056 or for international calls, 404-537-3406, passcode 2698233.
Participating on today's call are Liam Kelly, President and Chief Executive Officer; and Thomas Powell, Executive Vice President and Chief Financial Officer. Liam and Tom will provide prepared remarks and then we'll open up the call for Q&A.
Before we begin, I would like to remind you that some of the matters discussed in the conference call will contain forward-looking statements regarding future events as outlined in our slides. We wish to caution you that such statements are in fact forward-looking in nature and are subject to risks and uncertainties and actual events or results may differ materially.
The factors that could cause actual results or events to differ materially include, but are not limited to, factors referenced in our press release today as well as our filings with the SEC, including our Form 10-K which can be accessed on our website.
With that, I would like to turn the call over to Liam.
Liam J. Kelly
Thank you, Jake, and good morning, everyone. It is a pleasure to once again have an opportunity to speak with the investment community regarding Teleflex. And I am pleased to report that we are off to a solid start in 2018. The results achieved in quarter one along with our projections for the remainder of the year, allow us to reaffirm many of our previously provided financial guidance metrics while also affording us an opportunity to increase a couple of others, including our full-year adjusted earnings per share range.
And while Tom will go into more details on our full-year EPS guidance range, I would like to take a moment to discuss our full-year revenue guidance. We are pleased to reaffirm our full-year constant-currency revenue guidance range of between 12% and 13%, as well as our full-year organic constant-currency revenue growth range of between 5% and 5.5%. I remain confident in our ability to achieve both of these ranges based on the anniversary of the Surgical product line exit, combined with the easier European comparable in the second half of the year, as well as the NeoTract acquisition being counted as organic revenue in the fourth quarter.
I'm also pleased to say that due to the favorable FX environment, we are raising