4.4 Standard Precautions

Standard Precautions

Standard Precautions are the minimum infection-control practices applied to every resident, every time, regardless of diagnosis or known infection status. They rest on a single assumption the exam repeats constantly: treat all blood and body fluids as if they are infectious. You cannot tell who carries a bloodborne pathogen by looking, and many infections are asymptomatic, so the safest approach is to protect yourself and others during all care.

Standard Precautions merged two older concepts: Universal Precautions (developed for bloodborne pathogens such as Hepatitis B and HIV) and Body Substance Isolation (for all moist body fluids). Today they apply to:

• Blood
• All body fluids, secretions, and excretions — except sweat
• Non-intact skin
• Mucous membranes

That single exception — sweat — is a favorite test detail. Sweat is not considered infectious under Standard Precautions; everything else moist is.

Core Components

Choosing PPE Under Standard Precautions

The amount of PPE rises with the anticipated exposure:

Respiratory Hygiene and Cough Etiquette

For both residents and staff: cover coughs and sneezes with a tissue or the elbow, dispose of tissues immediately, perform hand hygiene after contact with respiratory secretions, offer a surgical mask to a symptomatic resident, and keep symptomatic people spatially separated when possible.

Safe Sharps Handling

Sharps include needles, lancets, blades, and anything that can puncture the skin. CNAs rarely handle needles, but the rules are tested:

Linen and Waste Handling

Do not shake or fan soiled linens — shaking aerosolizes microorganisms into the air and onto your uniform. Roll linen with the soiled side inward, hold it away from your body, and bag it at the point of use. Follow facility color-coding: red bags are for regulated biohazard/infectious waste, sharps go only in the rigid sharps container, and routine trash goes in standard receptacles. Wash your hands after handling linen even if you wore gloves.

Managing Blood and Body-Fluid Spills

For a small spill, don gloves, wipe up the fluid with paper towels, clean the area with detergent, then disinfect (an EPA-registered or bleach-based product), and dispose of materials in the appropriate biohazard container. For a large spill, put on full PPE, contain the spill, cover it with absorbent material, then clean, disinfect, and dispose; large or extensive spills may require trained environmental-services staff. The order — clean first, then disinfect — matters because organic debris inactivates many disinfectants.

The Bottom Line

Standard Precautions are the floor, not the ceiling. They are used with every resident as the minimum. When a resident has a known transmissible infection, you add Transmission-Based Precautions (covered next) on top of — never instead of — these baseline practices.

Universal Versus Standard Precautions — A Common Exam Distinction

Older study materials and some test questions still reference Universal Precautions, so you must know the difference. Universal Precautions, introduced in the 1980s during the HIV epidemic, applied only to blood and certain bloodborne body fluids. Body Substance Isolation broadened the idea to all moist body substances. Standard Precautions merged the two and is the current single standard: it treats blood and all body fluids, secretions, excretions (except sweat), non-intact skin, and mucous membranes as potentially infectious.

If a question offers "Universal Precautions" and "Standard Precautions" as separate choices and asks which applies to all body fluids and all residents today, the answer is Standard Precautions.

Safe Injection and Glucose-Monitoring Practices

Even though CNAs do not give injections, the exam includes safe-injection principles because aides assist with equipment and may witness unsafe practice. The rule is one needle, one syringe, one resident, one time — never reuse a syringe or needle on more than one person, and never re-enter a medication vial with a used needle. For shared point-of-care devices such as glucose meters, the device must be cleaned and disinfected between residents, and lancing devices are never shared, because microscopic amounts of blood can transmit Hepatitis B, Hepatitis C, or HIV.

Reusing a fingerstick lancing device between residents has caused real hepatitis outbreaks in long-term care, which is exactly why this appears on the test.