Diabetes effecting result of a pregnancy test

[Michelleko]

I read somewhere that diabetes and also the presence of ketones in your urine could possibly cause a false negative result on an hpt. I tried to look for more information on this topic but came up empty. Is this a possibility and if so why?
Additionally I'd like to know if there are any reasons for a false negative result besides:
1. Testing too early
2. Not properly following directions
3. Taking the test too late in the day

[NicoleW09]

Also, the amount you drank the previous day doesn't matter because you've spent the whole night asleep and holding your urine.

[NicoleW09]

The presence of ketones doesn't effect a hpt. I had ketones in my urine due to being dehydrated from morning sickness, and I continuously tested positive. Diabetes doesn't render false negative pregnancy tests either.

if you drink a large amount of any liquid and use the bathroom frequently, you run the risk of diluting your urine.

[Michelleko]

I've heard of that one too as well as too much coffee. should have included that. But do you know if this refers to drinking too much water our coffee right before testing or will the amount you drink the day before effect a test that you take first thing the next morning?

Thanks for your response

[trying43]

Drinking too much water and diluting your urine...