Peptide Safety & Handling Guide

02 · Personal Protective Equipment (PPE)

PPE for peptide handling targets three exposure routes: skin/mucosal contact, accidental injection, and aerosolization during reconstitution.

Minimum PPE — every session

• Nitrile gloves (powder-free, ≥4 mil). Double-glove for reconstitution and freeze-thaw work. Replace immediately after any contact with vial septum, BAC water, or biological material.
• Lab coat (long sleeve, knee length, buttoned). Dedicated to the wet-bench area — do not wear outside the lab.
• Safety glasses with side shields at minimum. Use full splash goggles for any process involving more than 1 mL of bacteriostatic water or when working with frozen vials that may fracture.
• Closed-toe shoes. No fabric uppers in active wet-bench zones.

Add-on PPE by task

03 · Workspace Setup & Aseptic Technique

Pre-session

1. Clear bench. Remove anything not required for the session.
2. Wipe bench with 70% IPA. Allow ≥30 s contact time before reuse.
3. Lay out a fresh absorbent pad, plastic-backed side down.
4. Arrange supplies left → right in workflow order: vials, BAC water, syringes, sharps container, waste container, log book.
5. Don PPE (see §02). Wash hands before gloving.
6. Disinfect vial septa with a fresh 70% IPA wipe. Hold 5 s, allow to air-dry.

During session

• Never touch the needle, syringe tip, or vial septum with bare or gloved fingers.
• Keep the vial upright and the septum facing up except during draw.
• One needle, one vial. Replace the needle if it contacts any non-sterile surface.
• Move slowly. Most contamination events come from rushed transfers, not aerosols.
• If a sterile surface is touched or compromised, discard and restart that step.

Post-session

1. Cap and label every reconstituted vial. Date, compound, concentration, BAC water lot.
2. Dispose of sharps directly into the sharps container — never into general waste.
3. Wipe down the bench with 70% IPA.
4. Doff PPE in the correct order (see §02).
5. Log the session in the lab notebook (see §08).

04 · Sharps & Needlestick Protocol

Sharps handling rules

• No recapping. Do not recap used needles by hand. If recapping is unavoidable, use a one-handed scoop technique with the cap resting on the bench.
• Direct deposit.Drop used syringes into an FDA-listed sharps container at the point of use, within arm's reach of the bench.
• Fill to ¾ line. Replace sharps containers at the marked fill line — never push past it. Overfilled containers are the leading source of needlesticks during disposal.
• Single-use only. Never reuse needles or syringes, even for the same vial.

Needlestick response — immediate

1. Encourage bleeding. Do not squeeze the wound forcefully. Allow it to bleed passively for 30–60 seconds.
2. Wash thoroughly. Soap and warm running water for at least 60 seconds. Do not scrub with brushes or solvents.
3. Cover the wound with a clean dry dressing. Do not apply iodine or alcohol directly into a puncture wound.
4. Secure the source. Photograph the vial label, log the compound, lot, and concentration. Place the sharp in the sharps container.
5. Report. Notify the PI or lab manager immediately. File an institutional incident report within 24 hours (see §08).
6. Medical evaluation. Seek occupational health or urgent care evaluation the same day — even though research peptides are not infectious agents, accidental injection of an unapproved substance is a reportable exposure.

05 · Spill Response & Decontamination

Liquid spill — small (<25 mL)

1. Alert anyone in the immediate area. Do not allow uninvolved personnel within 1 m.
2. Don fresh nitrile gloves and goggles before approaching.
3. Cover the spill with absorbent pads from the outside inward.
4. Saturate with 70% IPA. Allow ≥10 minutes contact time.
5. Wipe up working from the perimeter to the center. Place all absorbent material in a sealed biohazard bag.
6. Re-clean the area with fresh IPA. Air-dry.
7. Log the spill (see §08).

Liquid spill — large (>25 mL) or unknown

1. Evacuate the immediate work area.
2. Close doors. Post a "Do not enter — spill in progress" sign.
3. Notify EH&S or the institutional spill response team.
4. Do not re-enter without full PPE (double gloves, N95, splash goggles, coat).
5. Follow institutional spill protocol from this point.

Lyophilized powder spill

1. Do not sweep or blow. Both will aerosolize the powder.
2. Don N95, double gloves, and goggles.
3. Dampen the powder with a fine mist of 70% IPA from a spray bottle.
4. Wipe up with damp absorbent pads.
5. Wet-mop the surrounding area with IPA.
6. Bag all waste as biohazard. Log the event.

Broken glass vial

1. Do not pick up glass with gloved hands directly.
2. Use forceps, tongs, or a dust pan. Place fragments in the sharps container, not biohazard bag.
3. Treat any residual liquid or powder per the procedures above.

06 · Contamination Control

Vial hygiene

• Wipe the septum with a fresh IPA pad before every needle insertion. Allow 5 s contact time.
• Use a new needle for every draw if the vial will be revisited. Reused needles dull and core the septum, allowing ingress.
• Inspect the vial before every use. Discard if turbid, discolored, has visible particles, or has a damaged septum.
• Store reconstituted vials per the storage guide. Do not exceed the reconstituted shelf life printed on the label.

Bench & tool hygiene

• 70% IPA wipe-down before and after every session.
• Replace absorbent pads at every session. Do not reuse.
• Dedicated reconstitution tools — do not share between peptide and microbiology workflows.
• Pipettes and tip boxes used for peptide work should be flagged and segregated.

Cross-contamination prevention

• One needle per vial per draw. Never insert a used needle into a second compound.
• When working with multiple peptides in a single session, complete each compound fully — reconstitute, label, store — before opening the next.
• Use color-coded vial caps or label stickers to visually distinguish concurrent compounds.
• Glove change between distinct compound workflows.

07 · Waste Disposal

Research peptide waste streams in a BSL-1 lab fall into three categories. Follow institutional policy first; the framework below is a baseline.

08 · Incident Documentation

Every safety incident — needlestick, splash, spill, broken vial, suspected contamination — must be documented. Documentation protects the researcher and produces the data needed to correct the workflow.

Minimum incident record

• Date, time, and location of the incident.
• Personnel involved (initials, role).
• Compound, lot number, concentration, vial source.
• Description of what happened — single sentence, no speculation.
• Immediate response taken (first aid, decon, vial photographed).
• PPE worn at the time of the incident.
• Notifications sent — PI, lab manager, EH&S, occupational health.
• Follow-up actions and reviewer sign-off.

Filing timeline

• Verbal notification to PI / lab manager: within 1 hour.
• Written incident note in lab notebook: end of the same session.
• Institutional incident report: within 24 hours.
• Post-incident review and corrective-action note: within 7 days.

09 · Quick-Reference Checklists