Laboratory Procedures & Safety Flashcards

Which of the following colors represents a biohazard container for sharps disposal?

Answer: Red

In healthcare and laboratory settings, specific color codes are used for waste disposal to ensure safety and proper handling of hazardous materials. Red biohazard containers are universally designated for the disposal of sharps, such as needles, syringes, and lancets. This prevents needlestick injuries and minimizes the risk of transmitting bloodborne pathogens.

Which of the following best describes the first step in spill cleanup?

Answer: Notify others and secure area

The first and most critical step in any spill cleanup, especially involving potentially hazardous materials, is to ensure the safety of all personnel. Notifying others immediately alerts them to the danger, and securing the area (e.g., by cordoning it off) prevents accidental exposure and limits contamination. This allows for a controlled and safe cleanup process by trained individuals.

What does PPE stand for in the lab setting?

Answer: Personal Protective Equipment

PPE stands for Personal Protective Equipment, which refers to specialized clothing or equipment worn by individuals to minimize exposure to hazards. In a laboratory setting, this typically includes items like gloves, lab coats, safety glasses, and sometimes masks or respirators. PPE is essential for protecting workers from chemical, biological, and physical dangers.

Which disinfectant is commonly used to sanitize laboratory surfaces?

Answer: 10% bleach solution

A 10% bleach (sodium hypochlorite) solution is a highly effective and commonly used disinfectant in laboratory settings. Its broad-spectrum antimicrobial properties allow it to kill a wide range of bacteria, viruses, and fungi. This makes it ideal for decontaminating surfaces after spills of biological materials or for routine cleaning to maintain a sterile environment.

Which of the following is NOT a common bloodborne pathogen?

Answer: Hepatitis A

Bloodborne pathogens are infectious microorganisms found in human blood that can cause disease, with HIV, Hepatitis B, and Hepatitis C being prominent examples. Hepatitis A, however, is primarily transmitted through the fecal-oral route, typically via contaminated food or water, rather than through blood contact. Therefore, it is not considered a common bloodborne pathogen.

Which document outlines the hazards of chemicals used in the lab?

Answer: Safety Data Sheet

A Safety Data Sheet (SDS), formerly known as a Material Safety Data Sheet (MSDS), is a comprehensive document that provides detailed information about hazardous chemicals. It outlines the chemical's properties, potential health and safety hazards, safe handling and storage procedures, emergency control measures, and first-aid information. SDSs are crucial for ensuring safe chemical use and compliance in the lab.

Which of the following is a proper handwashing technique in the lab?

Answer: Soap, scrub 20 seconds, rinse

Proper handwashing is a fundamental practice for infection control in any laboratory or healthcare environment. The recommended technique involves using soap and water, scrubbing all surfaces of the hands for at least 20 seconds to effectively remove transient microbes, followed by a thorough rinse under running water. This mechanical action combined with soap's detergent properties is key to reducing pathogen transmission.

What is the best practice for handling needles after venipuncture?

Answer: Dispose in sharps container

After venipuncture, immediate and proper disposal of needles is critical to prevent needlestick injuries, which pose a significant risk for transmitting bloodborne pathogens. Needles must be promptly placed into a designated sharps container without recapping. Recapping increases the risk of accidental punctures and is strictly prohibited by safety guidelines.

What does CLIA stand for in relation to laboratory standards?

Answer: Clinical Laboratory Improvement Amendments

CLIA stands for Clinical Laboratory Improvement Amendments, which are federal regulatory standards that apply to all clinical laboratory testing performed on humans in the United States. These amendments ensure the accuracy, reliability, and timeliness of patient test results, regardless of where the test was performed. CLIA regulations are crucial for maintaining quality and safety in laboratory diagnostics.