How long should I wait until I take the third test? December 22, 2024 21:17 Sperm values can change over time. You can confirm your initial results with a second test in about 2-4 weeks. Related articles How long should I wait until I take the second test? How do I connect YO to my phone? Where do I throw the device once, I’m done using it? How do I share my results? Some components are missing, what do I do?