discard tube

Medical term Routine Blood Collections

Plain tube drawn first when a winged set is used and sodium citrate is the first tube, so tubing air does not leave the citrate tube underfilled.

Sources

• Magnette A, et al. Pre-analytical issues in the haemostasis laboratory: guidance for the clinical laboratories. Thromb J 2016;14:49 · Thrombosis Journal (via PubMed Central)
• Nikolac N, Supak-Smolcic V, Simundic AM, Celap I. Croatian Society of Medical Biochemistry and Laboratory Medicine: national recommendations for venous blood sampling (based on CLSI H3-A6). Biochem Med 2013;23(3):242-254 (PMC3900082) · Biochemia Medica via PubMed Central

Free practice questions that use discard tube

• Routine Blood Collections, question 5A physician office patient has orders for an aPTT (light blue-top) and a hemoglobin A1c (lavender-top). The phlebotomist uses a straight…

Related terms

• sodium citrateAnticoagulant that binds calcium, used in light blue-top tubes for coagulation tests. Fill to the line to…
• dermal punctureCapillary collection: a lancet pierces the fingertip, or an infant's heel, to obtain a few drops of blood…
• dermisThe skin layer under the epidermis that contains capillaries and nerves; a dermal (skin) puncture reaches it…
• diaphoresisHeavy sweating. With pallor, nausea or dizziness during a draw, it can warn of a vasovagal reaction and…
• diastolic pressureThe second, lower blood pressure reading: arterial pressure between beats, while the ventricles rest and fill.
• dyspneaDifficult or labored breathing (shortness of breath). A patient who becomes short of breath during…
• EDTAEthylenediaminetetraacetic acid: binds calcium to keep blood unclotted; the lavender-top additive for…
• erythemaRedness of the skin from increased blood flow. Unlike petechiae or a bruise, it fades (blanches) when pressed.
• erythrocyteRed blood cell: a disk-shaped cell without a nucleus that carries oxygen bound to hemoglobin.

Study Routine Blood Collections

• Free Routine Blood Collections practice questions
• All Routine Blood Collections terms
• Venous Order of Draw, Additives and Inversions
• Phlebotomy Abbreviations and the Do-Not-Use List
• Medical Word Parts for Phlebotomy