20 Questions
What is the main purpose of sample preservation in routine coagulation testing?
To ensure accurate measurement of coagulation parameters
Which phase of coagulation testing is most susceptible to errors, according to the text?
Pre-analytical phase
What is the optimum ratio of anticoagulant trisodium citrate to blood for sample collection?
1:9
Which method is NOT mentioned as a way of obtaining specimens during the sample collection phase?
Needle aspiration
What is the primary consequence of errors in the pre-analytical phase of coagulation testing?
Affected measurement accuracy
What is the recommended method for mixing blood with the anticoagulant after collection?
End-over-end inversions
What are the two factors affecting sample transportation mentioned in the text?
Temperature and length
How long can plasma samples for Prothrombin Time (PT) be stored at 2-8°C if immediate testing is not possible?
Up to 24 hours
What is the recommended storage temperature for long-term storage of specimens in the text?
-20°C
Which phase of laboratory testing involves activities related to result interpretation, result verification, and result reporting?
Post-analytical phase
What is the recommended quality control material mentioned in the text for the Sysmex XP-300?
Eightcheck-3WP with three levels: Normal(-N), Low(-L), and High(-H)
In sample analysis using the Sysmex XP-300, what should be done after entering the sample ID?
Set uncapped specimen to sample probe and press the Start Switch
What is the recommended size range for platelets in the RBCs Histograms according to the text?
2-30 fl
What is the term used to refer to the actual number of each type of white blood cells in differential leukocytes count?
Absolute count
What is the method used to analyze the released haemoglobin from cells in the Sysmex XP-300?
Spectrophotometric analysis at 555nm
What is the principle behind the impedance principle of cell counting?
Detection and measurement of changes in electrical resistance produced by cells as they traverse a small aperture
What is the purpose of the pulse height analyzers in the automated hematology analyzer?
To collect and sort pulses according to their amplitude
In which phase of laboratory testing are result interpretation, result verification, and result reporting activities involved?
Post-analytical phase
What are the clinical significance of CBC tests include?
Bone Marrow disorders, Leukemias, Auto-immune disorders
What does the electronic impedance (resistance) principle of cell counting involve?
Applying low-frequency electrical current between two electrodes to measure changes in electrical resistance produced by cells
Learn about sample preservation techniques for routine coagulation testing, including the pre-analytical, analytical, and post-analytical phases. Understand the processes and techniques involved in ensuring the integrity, stability, and suitability of samples for testing.
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