I purchased a pack of 2 for £1 from Tesco this morning. They are described as 25mlU sensitivity on the leaflet in the box. Got a faint positive today (8dpo) and then tested an hour later with a random internet cheapie (10mlU sensitivity). BFN on the IC, but then used a Freedom test strip in the same urine sample and got another faint positive 🙈 has anyone used these before and can tell me if they are reliable or not?