Exposure Protocols

Mandatory Post-Exposure Response Framework

Exposure protocols are the step-by-step procedures a phlebotomist must follow immediately after a needlestick injury, splash to mucous membranes, or contact of blood/body fluids with non-intact skin. These protocols are mandated by the Occupational Safety and Health Administration (OSHA) Bloodborne Pathogens Standard and align with the CDC’s Updated Recommendations for Postexposure Prophylaxis.^[1]^[2]

For the phlebotomy certification exam (e.g., NHA CPT, ASCP PBT), knowing the correct sequence of actions, required documentation, and the rationale for each step is high-yield. Clinically, rapid and correct response reduces the risk of seroconversion for bloodborne pathogens like HIV, HBV, and HCV.^[3]

Essential Terminology for Exposure Classification

Percutaneous exposure: Injury from a needle or sharp object contaminated with blood or body fluids.
Mucocutaneous exposure: Splash of blood or potentially infectious material (OPIM) onto mucous membranes (eyes, nose, mouth).
Non-intact skin exposure: Contact with chapped skin, dermatitis, cuts, or abrasions.
Source patient: The patient whose blood or body fluid was involved in the exposure.
Exposed person: The healthcare worker (phlebotomist) who sustained the exposure.
Postexposure prophylaxis (PEP): Preventive treatment given after exposure to reduce the risk of infection (e.g., antiretroviral drugs for HIV, HBIG + vaccine for HBV).
Baseline testing: Initial blood draw from the exposed person to check for pre-existing infection and to establish serostatus.

Step-by-Step Clinical Response Sequence

Immediate First Aid (First 5 Minutes)

Needlestick or sharp injury: Wash the wound thoroughly with soap and water. Do not scrub, do not squeeze the wound, do not apply caustic agents (bleach, alcohol).^[2]
Splash to mucous membranes (eyes, mouth): Flush copiously with water, sterile saline, or an eye wash solution for at least 15 minutes.^[2]
Contact with non-intact skin: Wash the area with soap and water. If splashed on intact skin, wash with soap and water – risk is lower but still report.

Reporting and Activation

Immediately report the exposure to the supervisor, charge nurse, or employee health service per facility policy.
Complete an incident report (needlestick injury form) documenting the time, date, type of device, depth of injury, source patient status, and actions taken.
Identify the source patient (if known) and test for HIV, HBV, and HCV after obtaining consent (in compliance with HIPAA and state laws).^[1]

Medical Evaluation and Follow-Up

Exposed person undergoes baseline testing for HIV, HBsAg, anti-HBs, and anti-HCV as soon as possible (within hours).^[3]
Risk assessment by a qualified healthcare professional (e.g., in Employee Health or ED) to determine if PEP is indicated.
PEP initiation: For high-risk HIV exposure, antiretroviral PEP should be started ideally within 2 hours, and no later than 72 hours. For HBV, HBIG and/or HBV vaccine is given based on the exposed person’s immunity status.^[1]
Follow-up testing: Repeat HIV, HCV, and HBV serology at 6 weeks, 12 weeks, and 6 months (or per facility protocol).^[2]

Recognizing an Occupational Exposure Incident

Immediate sharp pain or prick (percutaneous)
Visible blood on the device or glove
Eye splash: stinging, irritation, or visible blood in the eye
Mucous membrane splash: taste of blood in the mouth or visible spatter
Emotional distress, anxiety, and fear of infection are common

Risk Stratification Parameters for Exposure Severity

The evaluating clinician uses a risk stratification system based on:

Type of exposure: Percutaneous > mucous membrane > non-intact skin (highest to lowest risk)
Depth of injury: Deep (e.g., hollow-bore needle) vs. superficial (e.g., suture needle)
Fluid volume: Visible blood on device vs. minimal
Source patient status: Known HIV/HBV/HCV positive, high viral load, unknown status
Exposed person’s immunity: For HBV – anti-HBs titer > 10 mIU/mL is protective; HCV has no vaccine or PEP.^[3]

Pathogen-Specific Postexposure Prophylaxis Regimens

HIV PEP

Preferred regimen: Three-drug antiretroviral therapy (e.g., tenofovir + emtricitabine + raltegravir or dolutegravir) for 28 days.^[1]
Must be started as soon as possible, ideally within 2 hours; efficacy declines after 72 hours.
Side effects (nausea, fatigue) may require supportive care and adherence counseling.

HBV PEP

Unvaccinated or non-responder: HBIG (0.06 mL/kg IM) within 24 hours AND start HBV vaccine series.^[3]
Vaccinated with known adequate anti-HBs: No HBIG needed; a booster dose of vaccine may be considered.
Known non-responder to vaccine: HBIG plus repeat vaccination.

HCV PEP

No vaccine or PEP exists for hepatitis C.
Management focuses on early detection: follow-up HCV RNA testing at 4–6 weeks, and if positive, referral for antiviral treatment.^[2]

Preventive Safeguards and Potential Aftermath

Never recap a needle using two hands – use the one-handed scoop method or a safety-engineered device. This is the #1 preventable cause of needlesticks.^[4]
Always dispose of sharps immediately into a puncture-resistant, leak-proof sharps container that is clearly labeled and within arm’s reach.
Use standard precautions for every patient: gloves, gown, mask, eye protection when there is risk of splash.
After an exposure, do not delay reporting – even low-risk exposures require documentation for workers' compensation and future health tracking.
Psychological complications: Anxiety, sleep disturbances, and depression can occur. Access to counseling and support services is part of the protocol.^[1]

Frequently Tested Protocol Steps and Mnemonics

Remember the “3 W’s” of immediate first aid: Wash – Flush – Report (wash skin, flush mucous membranes, report immediately).
The time window for HIV PEP is 72 hours – but it works best within 2 hours. This is frequently tested.
For HBV, the critical window for HBIG is 24 hours.
Know that HCV has no PEP – the emphasis is on surveillance and early treatment.
OSHA requires that all phlebotomists be offered the HBV vaccine (series of 3) at no cost within 10 days of hire, and that an exposure control plan be in place.^[4]
Documentation is vital: you will be tested on the need to complete an incident report, not just wash the wound.
Memory aid for first aid steps: “Wash, Flush, Report, Baseline, PEP” → WFRBP
On the exam, if a question asks “What is the first action after a needlestick?” – the answer is wash with soap and water, then report.