A needle is inserted right into a vein and bloodstream is withdrawn and gathered in a vial or syringe. Following the procedure, the rubber band is removed. After the bloodstream has been collected, the needle is removed and the certain area is covered with cotton or a bandage to avoid the bleeding. Collecting the bloodstream for the test is only going to take a short while. What to Expect Collecting an example of blood is temporarily uncomfortable and may feel like an instant pinprick. Afterward, there could be some slight bruising, that ought to go away in a few days.BackContinueGetting the Results The blood sample will be processed by a machine, and email address details are usually available in a few days. Risks The LH test is known as a safe procedure. Nevertheless, much like many medical tests, some problems may appear with having bloodstream drawn, like: feeling or fainting lightheaded hematoma pain connected with multiple punctures to discover a vein Helping Your Child Having a blood check is painless relatively.Taylor then filmed individual virus contaminants of pseudorabies virus, a model alpha-herpes virus that infects pets, as the contaminants exited neurons and entered epidermis cells. He found that the bottleneck limiting infection to one or two particles exists for pseudorabies virus aswell. As shown in the video of the procedure, viral particles, genetically modified to glow red, travel down log extensions of the neuron cell body known as axons. The video reveals a handful of viral contaminants exiting an axon but only one particle entering a close by epithelial cell.