BLD 430 FINAL EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++

BLD 430 FINAL EXAM QUESTIONS AND ANSWERS WITH

COMPLETE SOLUTIONS VERIFIED GRADED A++


proper handling of specimen


- no pre analytical error

- proper label and ID

- chain of custody

- avoid hemolysis and cross contamination


reject specimen if


- not labeled or identified

- hemolysis

- cross contamination

- pre analytical error

- collected in incorrect tube

- incorrect specimen type


DNA Storage: blood, bone marrow, fluids


- less than or equal to 1 day, 23C

- 3 days at 4C

- WBC, greater than or equal to 1 year 020C or -70C

, DNA Storage: tissue


- 23C

- less than or equal to 1 day, 4C

- greater than or equal to 2 weeks, -20C

- greater than or equal to 2 years, -70C


DNA Storage: isolated DNA


- less than or equal to 26 weeks, 2-25C

- 1-3 years, 4C

- less than or equal to 7 years, -20C, -70C


RNA Storage: blood, bone marrow, fluids


- less than 2 hours, 23C or 4C

- 5 days, 23C

- 7 days, 4C in denaturant

- 1-2 weeks, -70C in denaturant


RNA Storage: tissue


- less than 2 hours, 4C

- snap frozen, -70C, greater than or equal to 2 years

- nitrogen vapor, -140 to -150C, greater than or equal to 2 years


RNA Storage: isolated RNA