Re: After semen dries up, How long can sperm be detected under microscopic insp

Mark, When we are working up a semen sample in the laboratory we make a 
glass slide smear of the semen sample for evaluating the morphology under 
the microscope.  We always make several extra slides to keep in storage in 
case there is any question later about the evaluation.  This allows us to 
pull a microscope slide months, or even years later, to check the sample 
again if needed.  As long as our storage system is dry and uncontaminated, 
the samples have never degraded in the 20 plus years that we have been 
doing andrology here in Norfolk.