Injection Safety & Sterility Checklist

Before Every Injection

Sterility isn't optional—it's the foundation of safe peptide use. Infections from contaminated injections range from minor skin irritations to serious systemic infections requiring hospitalization. Every shortcut increases your risk. The injection-technique recommendations below are anchored in the FITTER consensus from Frid and colleagues, which remains the international standard for subcutaneous self-injection.^[NaN]

This checklist covers everything you need to verify before, during, and after each injection.

Pre-Injection Checklist

Environment Preparation

• Clean, flat work surface — Wipe down with 70% isopropyl alcohol
• Good lighting — You need to see what you're doing
• Minimal distractions — Rushing leads to mistakes
• All supplies within reach — Gather everything before starting
• Sharps container nearby — Never recap used needles

Supplies Verification

• New, sealed syringe — Never reuse syringes
• New, sealed needle — Use a fresh needle for each injection
• Alcohol prep pads — At least 2 per injection (vial + skin)
• Peptide vial — Check expiration date
• Bacteriostatic water (if reconstituting) — Check expiration
• Sharps container — For safe needle disposal

Personal Preparation

• Hands washed thoroughly — 20+ seconds with soap, or use hand sanitizer
• Hands completely dry — Wet hands spread bacteria
• Injection site accessible — Clothing adjusted or removed as needed
• No signs of illness — Consider postponing if you have an active infection

Vial Preparation Checklist

Before Drawing

• Check vial integrity — No cracks, chips, or damage
• Verify peptide appearance — Clear solution without particles or cloudiness
• Check reconstitution date — Within recommended shelf life
• Clean rubber stopper — Swab with alcohol pad, let air dry (10-15 seconds)
• Never touch cleaned stopper — Contamination negates cleaning

Drawing the Dose

• Draw air equal to dose — Creates positive pressure in vial
• Insert needle through center of stopper — Reduces coring
• Inject air into vial — Push plunger down
• Invert vial — Needle tip submerged in liquid
• Draw slightly more than needed — You'll remove air bubbles
• Tap syringe to raise bubbles — Flick gently with finger
• Push out air and excess — Until correct dose remains
• Withdraw needle from vial — Straight pull, don't angle

Injection Site Checklist

Site Selection

Rotate injection sites systematically to prevent lipohypertrophy (fat tissue changes) and ensure consistent absorption.

Abdomen (Most Common)

• At least 2 inches from navel
• Avoid belt line area
• Avoid existing injection marks
• Avoid scars, moles, or bruises

Thigh (Alternate)

• Front or outer thigh
• Middle third of thigh
• Avoid inner thigh

Upper Arm (If Accessible)

• Back/outer area of upper arm
• Fleshy area you can pinch

Site Preparation

• Inspect the area — No redness, swelling, or skin issues
• Clean with alcohol pad — Firm, circular motion from center outward
• Let alcohol dry completely — 10-15 seconds minimum
• Don't blow on it or fan it — Introduces airborne bacteria
• Don't touch cleaned area — If touched, clean again

Injection Technique Checklist

Subcutaneous Injection Steps

• Pinch skin — Create a fold of fat tissue (1-2 inches)
• Insert needle at proper angle — 45-90° depending on needle length and tissue
• Insert in one smooth motion — Don't hesitate partway
• Release skin pinch — After needle is fully inserted
• Inject slowly — 1-2 seconds per 0.1mL
• Wait 5 seconds — Before withdrawing needle
• Withdraw at same angle — Straight out
• Don't rub injection site — Light pressure only if bleeding
• Apply gentle pressure — With clean cotton or gauze if needed

What NOT to Do

• ❌ Don't inject into visibly infected or irritated skin
• ❌ Don't inject into the same exact spot repeatedly
• ❌ Don't inject if solution looks cloudy or discolored
• ❌ Don't recap needles with the original cap (use sharps container)
• ❌ Don't rush the injection process
• ❌ Don't reuse any equipment

Post-Injection Checklist

Immediate Steps

• Dispose of needle immediately — Into sharps container
• Never recap used needles — Risk of needlestick injury
• Note injection site — For rotation tracking
• Record the dose — In your log or app
• Clean up work area — Dispose of alcohol pads, packaging

Site Monitoring

Normal reactions may include:

• Minor redness (should fade within an hour)
• Small drop of blood (apply gentle pressure)
• Slight firmness at site (massage gently)

Return Peptide to Storage

• Replace vial cap (if using rubber stopper covers)
• Return to refrigerator immediately — Don't leave out
• Store in designated location — Consistent temperature zone

Warning Signs Checklist

Stop and Seek Medical Attention If You Notice:

At Injection Site:

• Increasing redness spreading outward
• Heat or warmth at the site
• Swelling that worsens over hours
• Pus or discharge
• Red streaks extending from site
• Pain that intensifies rather than fades

Systemic Signs:

• Fever or chills
• Feeling unwell after injection
• Rapid heartbeat
• Difficulty breathing
• Dizziness or fainting

When to Call a Doctor

• Redness or swelling that spreads beyond 2 inches
• Any sign of infection developing within 24-72 hours
• Allergic reaction symptoms (hives, swelling, breathing difficulty)
• Persistent pain at injection site beyond 24 hours

Site Rotation System

Track your injections to ensure proper rotation:

Simple 4-Site Rotation (Abdomen)

Extended 8-Site Rotation

Add thighs to your rotation:

1. Upper left abdomen
2. Upper right abdomen
3. Lower left abdomen
4. Lower right abdomen
5. Left thigh (outer)
6. Right thigh (outer)
7. Left thigh (front)
8. Right thigh (front)

Rotation Rules:

• Never use same exact spot within 2 weeks
• Space injection sites at least 1 inch apart
• Skip any site showing irritation

Equipment Quality Checklist

Verify Before Use

Syringes:

• Individually packaged
• Sterile packaging intact
• Not past expiration date
• Appropriate size for dose (insulin syringes: 0.3mL, 0.5mL, or 1mL)

Needles:

• Individually packaged
• Sterile packaging intact
• Appropriate gauge (27-31 gauge for subcutaneous)
• Appropriate length (½ inch for most subcutaneous injections)

Alcohol Prep Pads:

• 70% isopropyl alcohol concentration
• Individually wrapped
• Not dried out

Summary

Safe injection technique comes down to three principles:

1. Everything must be sterile — Clean surfaces, clean hands, new equipment
2. Never skip steps — Each item on this checklist exists for a reason
3. When in doubt, start over — A contaminated injection isn't worth the risk

Keep this checklist visible in your injection area until the process becomes automatic. Even experienced users benefit from occasional review to prevent complacency.