Question

Qn 2. Biological specimens collected for diagnostic investigations during necropsy examination may be easily contaminated. This is in part due to the messy nature of the animal post-mortem examination itself or due to the operator's activities or omissions. Briefly describe at least 3 precautions you would make to ensure that the samples collected for bacteriology and virology testing are free from contamination.
please solve all the questions in the right way

Answer 1

2) Three precautions to be taken to ensure that the samples collected for bacteriology and virology testing are free from contamination are :-

- Use universal precautions for collecting and handling all specimens.

- Whenever possible, collect all culture specimens prior to administration of any antimicrobial agents.

- Avoid contamination with indigenous flora. Swabs are convenient but inferior to tissue and fluid.

3. EDTA tubes :-

Clinical chemistry - No

Transfusion - Yes

Haematology - Yes

Serum - No

Li- Heparin tubes :-

Clinical chemistry - Yes

Transfusion - No

Haematology - No

Serum - Yes

Sodium citrate tubes :-

Clinical chemistry - No

Transfusion - No

Haematology - Yes

Serum - No