<s>[INST] Hi. I had yellowish discharge that came out of my penis. I know everybody always wants to say its from an STD. So today I went and got tested at my local clinic. I want to know what else is it that can cause yellow discharge from the penis besides an STD? [/INST] Hello i share your concernApart from STI yellow discharge from penis could be related to UTI or prostate inflammation or kidney disease this might be renal cast which is suggestive of kidney disease in my opinion you should get your urine test for microscopy as well as for culture and sensitivity test to ascertain the pathogen or bacteriaaccordingly you may require a course of antibioticshave plenty of fluids to maintain good hydrationPlease revert back to me with complete medical history and urine reports I will be happy to help you regards </s>