1 Wipe away the first drop of blood with a piece of clean, dry cotton gauze. 2  Since newborns do not often bleed immediately, use gentle pressure to produce a rounded drop of blood. 3  Do not use excessive pressure because the blood may become diluted with tissue fluid. 4  Fill the required microtainer(s) as needed.
You'll likely see labels like THHN or THWN written on the wire. For example, THHN wire stands for thermoplastic high heat-resistant nylon coated wire. THWN stands for thermoplastic heat- and moisture-resistant nylon coated wire. As you can see, these wires are built to take on many different conditions.
With electrical wire that runs in the familiar plastic or vinyl jacket--called NM (for non-metallic) cable--the labeling is fairly easy to understand. NM cable will be identified by its wire gauge (such as 12-gauge or 14-gauge), and by its designated usage, but there's not much more you need to know when buying NM cable.