can my pee effect it??

la

so I took six test through out the week. the first one my pee was held for five hours I took it and it came up faint, next morning held my pee for 8+ hours and it was negative, then I took two test strips held my pee for less the 6 hours and they were faint but positive, then I held my pee for 10 hours and my test was negative. could it be because in holding my pee too long (I usually sleep alot hence the 8+hours)