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.
The most popular type of building wire is Thermoplastic High Heat-resistant Nylon coated (THHN) wire. This building wire, as defined by the National Electrical Code, is for use in construction. Engineers also commonly use THHN in machine tools, control circuits and some appliances.THHN wire comes in a variety of types.The wire comes in two types of conductors depending on the size: stranded or solid.his building wire, as defined by the National Electrical Code, is for use in construction. Engineers also commonly use THHN in machine tools, control circuits and some appliances. THHN wire comes in a variety of types. The wire comes in two types of conductors depending on the size: stranded or solid.