Adult novelty guide · Non-diagnostic
How long does the mixed liquid stay usable?
Use the prepared liquid up to 3 days after mixing. Count that window from the day water is added. Preg Pro is an adult novelty product and cannot provide pregnancy or medical information.
The 3-day window begins after mixing
Preg Pro starts in a portable solid format, so you decide when to prepare it. The public use guidance applies to the liquid after a strip has been mixed with 10 ml of water, not to the unopened solid format.
Mark the mixing day when you prepare the liquid. Use it within the window of up to 3 days after mixing. If you no longer know when it was mixed, do not guess that it is still within the window; prepare a fresh batch instead.
When to prepare a fresh batch
1. Check the mixing day
If the liquid is still within 3 days after mixing, it remains inside the public use window.
2. Start over when the window has passed
If more than 3 days have passed, use an unused strip to prepare fresh liquid. Every envelope contains two test strips, so a second strip may be available if the first one was used for the earlier batch.
3. Repeat the approved preparation steps
Use 10 ml of water, dip and stir the yellow end until it turns white, then use any pregnancy test with the prepared liquid.
Need the full preparation sequence? Visit How to use Preg Pro. If a preparation step went wrong, use the troubleshooting guide.