Specimen Storage Methods Quiz

What is the recommended storage temperature for unpreserved urine and stool specimens?

At what temperature should specimens collected for the recovery of Neisseria gonorrhoeae be stored?

What is the recommended storage temperature for cerebrospinal fluid (CSF) specimens?

Which specimens should be stored in the freezer at -20oC?

What type of specimens should be stored at -70oC for long-term storage?

Which body fluids are recommended to be stored at room temperature (22oC)?

What are the minimum information required on a specimen label?

What details should be included on a specimen requisition form?

Which specimens fall under level 1 priority for processing in the laboratory?

What is the importance of prompt processing of specimens in the laboratory?

Why is it crucial to provide detailed information on specimen labels and requisition forms?

What are the risks associated with delaying the processing of level 1 specimens?

Storage Temperature for Specimens

Unpreserved urine and stool specimens should be stored at room temperature (22°C) or refrigerated at 4°C.
Specimens collected for the recovery of Neisseria gonorrhoeae should be stored at 35-37°C to promote bacterial growth.
Cerebrospinal fluid (CSF) specimens should be stored at room temperature (22°C) or refrigerated at 4°C.

Freezer Storage

Specimens that require freezing should be stored in the freezer at -20°C.
Long-term storage of specimens (e.g. for research purposes) requires storage at -70°C.

Room Temperature Storage

Body fluids that can be stored at room temperature (22°C) include urine, stool, and CSF.

Specimen Labeling and Requisition Forms

Minimum information required on a specimen label: patient's name, identification number, specimen type, and collection date.
A specimen requisition form should include the patient's name, identification number, test requested, collection date, and any relevant clinical information.

Priority Specimens

Level 1 priority specimens for processing in the laboratory include those that are unstable or require rapid processing, such as blood cultures and CSF specimens.
Prompt processing of specimens in the laboratory is crucial to ensure accurate results, prevent degradation, and provide timely medical intervention.

Importance of Detailed Information

Providing detailed information on specimen labels and requisition forms is crucial to ensure accurate testing, prevent errors, and maintain patient safety.
Delaying the processing of level 1 specimens can lead to inaccurate results, delayed diagnosis, and compromised patient outcomes.

Test your knowledge on the appropriate storage methods for different types of specimens based on transport media and the etiologic agent. Learn when to refrigerate or store at room temperature to prevent microbial overgrowth and preserve specimen integrity.