Hello Doctors,

 I am married and stupidly had an unprotected drunken 1 night stand with a girl I know which involved up to 10 separate incidents over the night of vaginal sex and fellatio.

I have tested privately (15 days post exposure) in London for Chlamydia, Ghonnoreah, Mycoplasma Genitalium, Ureaplasma, Trich and Herpes and all were negative.

 I am uncircumsized and didn’t want to keep proactively checking every post my exposure but did do on occasion and noticed the following:

-           2.5 days post exposure – a very slight amount of clear, sticky secretion – had been aroused a little earlier so put this down to normal secretion

-          10 days post exposure – 8.10am, a small amount of white/cloudy secretion after defecating (I understand this is common?) and then a bit more 20 mins later which may well have just been from the original secretion 20 mins earlier in the morning. I then checked at 10am, 1pm, 3pm and 5pm and there was nothing there.

-          12 days post exposure – checked at 7am, 9am and 11am and nothing there. I then checked again at 1pm and there was a slight amount of clear secretion, just looked like pre-ejaculate and I think I may have been aroused slightly before so may well have been that.

-          13 days post exposure – checked at 8.30am, 10:30am, 2.30pm amd 4pm and nothing there

Question

Do I need to have swab test for NSU or with my negative tests for all the infections listed can I assume I am ok and there is no risk to my wife from having unprotected sex with her?

Thank you Doctor, that’s very useful.

My follow-up questions relate to the sample collection. When I’ve visited NHS clinics in the past I’ve just had to urinate into a cup and then give it back to the Dr. On this occasion at the private clinic I was given a sample collection kit direct from the laboratory  

I had to pee into a small box which had a plastic/cellophane liner and then I had to transfer this into a Sample Tube which I then sealed and gave back to the Dr ready to go direct to the lab. I didn’t give this a great deal of thought at the time but the instructions included to wash my hands first, to ensure it was a first catch sample, to only pee half way into the small box and went transferring the sample into the Sample Tube to not to go beyond the 9ml mark.

1.       I didn’t wash my hands first and touched the plastic/cellophane liner of the box to push it down to ensure there would be no ‘splash back’ before urinating. Would this effect test accuracy?

2.       I peed directly into the initial small box (first catch) but must have gone over the half way may mark as when I transferred it into the sample tube it filled the tube almost to the top (so way over the 9ml mark, I assume probably somewhere around the 30ml mark) – would this have any impact on test accuracy?  

3.       Finally, given the Sample tube was full it meant there was some of my sample still in the initial container box which I then needed to dispose of. My concern is that is could have been this remaining liquid in the initial sample box that had bacteria in that the test would pick up or does the testing not work like that?