monk. n. A man who is a member of a brotherhood living in a monastery and devoted to a discipline prescribed by his order: a Carthusian monk; a Buddhist monk.
Complete Blood Count (CBC): EDTA tubes (purple top): Purple top tubes should be 50-60% full. Do not overfill tubes. Gently mix specimen by inverting 5-10 times and place it on a rocker for up to 30 minutes, then refrigerate at 2-8Â°C. When a differential is required as part of a CBC, slides must be prepared within 12 hours of blood collection. Refrigerated EDTA blood is stable for CBC for up to 24 hours.
The rubber sheath allows multiple tubes of blood to be collected and covers the needle in between tube changes so blood does not collect in the holder. The Portex needle pro (seen in the center) is a needle safety device used with the vacuum tube blood collection system. Note, this blood collection device uses a standard multi-sample collection needle, as seen on the left. Microcapillary tubes are used to collect small volumes of blood.