https://boards.hellobee.com/ Pregnancy, Baby and Parenting blog, by Hellobee en Sun, 12 Apr 2026 06:18:42 +0000 https://boards.hellobee.com/topic/urine-concentration-for-opk#post-2634775 Mon, 10 Oct 2016 12:31:00 +0000 LAZB 2634775@https://boards.hellobee.com/ <p>I think it's supposed to be 4 hours </p> https://boards.hellobee.com/topic/urine-concentration-for-opk#post-2634760 Mon, 10 Oct 2016 12:08:02 +0000 jaybee28 2634760@https://boards.hellobee.com/ <p>How concentrated must urine be for an accurate OPK? 2h hold? 4h hold? I drink a lot of water and coffee and my urine is usually totally clear. Not sure if that's conducive to a positive OPK... </p>