Knowledge Burst Unit 1 Flashcards
The main veins in the arm that are mainly used for venipuncture are:
cephalic, basilic, and median cubital
What is the recommended order of drawing when the evacuated tube system is used?
blood culture, coag (blue), SST (red), sodium heparin (green), EDTA (lav)
If the patient refuses to have their blood drawn, you would proceed by:
report to the nurse that the patient refused to have their blood drawn
The most important precaution in preventing infections is:
handwashing
the single most important step in phlebotomy is:
patient identification
the needle should be inserted in the arm with the bevel facing:
up
treatment of all human body fluids as potentially infective and capable of transmitting disease is called:
standard precautions
the primary function of platelets is to:
facilitate blood clotting
quality assurance is quality control
false; quality control is a subset of quality assurance
Diagnostic efficacy testing includes determination of diagnostic sensitivity, positive and negative predictive value, and ROC analysis
true
A shift or trend may indicate an instrument calibration issue - in other words, a constant systemic error
true
a normally distributed curve Guassian curve is symmetrical- bell-shaped
true
if 1/20 control results fall between two and three standard deviations, the laboratory scientist should reject the run
false
clinical useful assay should have an ROC value of 0.85 or higher
true
Sensitivity is defined as the lower limit of detection. Specificity is defined as the ability of an assay to distinguish the analyte of interest from interfering substances
true
