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Questions and Answers
What anticoagulant is typically used in a 'purple top' vacutainer tube for blood collection?
What anticoagulant is typically used in a 'purple top' vacutainer tube for blood collection?
- Heparin
- Citrate
- EDTA (correct)
- Oxalate
Which method is used for dried blood stains when the stain is transferred to a swab moistened with sterile water or saline?
Which method is used for dried blood stains when the stain is transferred to a swab moistened with sterile water or saline?
- Cutting
- Elution
- Scraping
- Swabbing (correct)
What is the purpose of using an anticoagulant in blood collection vacutainer tubes?
What is the purpose of using an anticoagulant in blood collection vacutainer tubes?
- To preserve DNA evidence
- To enhance the color tests
- To prevent contamination of the sample
- To prevent the blood from clotting (correct)
Which test is known to be less sensitive than the Kastle-Mayer and Leuco-malachite green tests for identifying blood?
Which test is known to be less sensitive than the Kastle-Mayer and Leuco-malachite green tests for identifying blood?
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Which method involves using a small amount of saline or distilled water to dissolve a dried blood stain?
Which method involves using a small amount of saline or distilled water to dissolve a dried blood stain?
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