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.
TFFN vs THHN Wire. THHN wire and TFFN wire belong to a category of electrical wire also known as building wire. TFFN and THHN wire are built in accordance with the National Electrical Code for general purpose wiring for installation in conduit or other recognized raceway. THHN and TFFN wire are essentially the same wire, aside from specific ratings that pertain to each.