18.4 Handling and Disposing of Biohazardous Materials

Why Biohazard Handling Is on Procedures 2.D

The 2025 Task Inventory requires mammographers to follow environmental-protection standards for handling and disposing of biohazardous materials (sharps, blood, body fluids) and to handle biopsy specimens. OSHA's Bloodborne Pathogens standard, 29 CFR 1910.1030, is the federal backbone. ARRT will not ask you to recite paragraph numbers. It will ask whether a used vacuum probe goes in the trash, whether you recap a core needle, and whether a cup of cores may leave the room unlabeled.

This section stays at basic knowledge. You are not the laboratory medical director. You are the person who keeps tissue identified, keeps blood off the floor, and keeps needles out of everyone else's fingers. Room set-up and consent still come first — see history, consent, time-out, and setup — but a perfect time-out does not excuse an unlabeled formalin cup.

Cyst aspiration was removed from mammography Procedures in 2025. Do not study it as the body-fluid procedure on this exam. You still handle any body fluid that appears during a core biopsy (blood, serous fluid) as other potentially infectious material (OPIM).

OSHA Bloodborne Pathogens — Conceptual Level

Breast biopsy generates blood and OPIM. Training materials name hepatitis B, hepatitis C, and HIV as the pathogens of concern. Protection is layered:

• Engineering controls: safety-engineered devices when available, puncture-resistant sharps containers at the point of use, splash protection.
• Work-practice controls: do not recap, bend, or break contaminated needles; do not overfill sharps containers; clean spills with the facility disinfectant.
• PPE: gloves for every case; add gown, mask, and eye protection when splash is reasonably anticipated. Vacuum-assisted biopsy can spray.
• Standard precautions: treat blood and tissue from every patient as potentially infectious. There is no "she looks healthy" trash workflow.

Employers must maintain an exposure-control plan, offer hepatitis B vaccination, and provide post-exposure evaluation. For the exam, know that a needlestick is an exposure you report immediately. You do not finish the rest of the day's biopsies first and mention it at clock-out.

Do Not Recap Needles

OSHA is blunt: contaminated needles and other contaminated sharps shall not be bent, recapped, or removed unless the employer can show no alternative is feasible or a specific procedure requires it — and even then, recapping must use a mechanical device or a one-handed technique. Breast-imaging exam answers are simpler: do not recap. Activate the safety feature if the device has one, and put the entire sharp into the sharps container immediately.

Two-handed recapping of a bloody core needle is the wrong answer every time. So is bending the needle "so it cannot poke through the bag" and so is parking an uncapped probe on the tray until the clip films are done.

Sharps containers must be closable, puncture-resistant, leakproof on the sides and bottom, and labeled or color-coded (biohazard label or red container). Keep them upright. Replace them when they reach the manufacturer's fill line. Overfilling is a common citation and a delayed needlestick. Do not empty a disposable sharps container into a larger red bag.

Biopsy Specimens: Label First, Medium Second

Cores are clinical specimens and biohazards. Two rules do not change with the laboratory's preferred cassette:

1. Label laterality and site before the tissue leaves the tray. Patient name and a second identifier, right or left, clock position or quadrant, and what the container holds (cores from the 10-o'clock mass; calcifications from the UOQ cluster). An unlabeled formalin cup in a busy department is a never event, even if you personally walk it down the hall.
2. Follow the order and the laboratory's instructions for medium. Most diagnostic cores for routine histology go into formalin. Some orders ask for fresh, dry, or frozen tissue. Do not memorize a homemade list of which receptors or molecular assays "always" need dry tissue. Those rules are laboratory- and order-specific, and immunohistochemistry on formalin-fixed tissue is standard for many markers that older anecdotes still describe as "fresh only." If the requisition says formalin, use formalin. If the pathologist or protocol says submit a core dry or fresh, do that, keep it identified, and do not drop it into formalin "just in case."

Seat lids tightly. Formalin is a chemical irritant as well as a specimen medium; do not leave open cups under the patient's face. When more than one site is sampled, each lesion gets its own labeled container. Do not combine right and left. Do not combine two clock positions in one cup because you are "saving formalin."

Body Fluids and Biopsy Supplies

Any liquid blood or serous fluid obtained during core biopsy goes in a leak-proof, labeled, biohazard-identified container — not a paper cup in the regular trash. Bloody gauze, tubing, disposable drapes, and soiled gloves go in regulated medical waste (red-bag), not the paper trash, once they are saturated or dripping. Intact unused supplies that never touched blood are not automatically red-bag waste.

Realistic Exam Scenario

After a vacuum-assisted stereotactic biopsy, the probe is still in your hand, the cores are in an unlabeled cup, and the patient feels faint. Sequence matters: get the needle out of a dangerous position and into the sharps container without recapping, protect the patient (vasovagal care), then label the specimen with laterality and site, then finish dressing and instructions. Remembering "it was the left breast" is not a label. The same logic applies when two sites are biopsied: two cups, two labels, no mixing.

Common Traps

• Recapping "just this once" because the safety sheath stuck.
• Putting a used vacuum probe in a red bag instead of a sharps container.
• Formalin in an unlabeled cup.
• Combining two biopsy sites in one container.
• Teaching cyst aspiration as the 2025 body-fluid procedure.
• Inventing a national rule that receptor studies always require dry tissue.