Preparation for Non-Sterile Compounding
Necessary equipment selection
Cleaning of equipment and work area
Accurate calculation of ingredients
Accurate weighing or measuring of ingredients
Steps Involved:
Preparation
Compounding
Final Check
Analysis
Steps to Follow:
Review and interpret the prescription
Retrieve or develop a Master Formulation Record (MFR) detailing all components and procedures
Accurately weigh and measure all components
Use appropriate compounding techniques to create a finished preparation
Properly package and label the prescription
Document preparation using a Compounding Record (CR)
Key Elements:
Patient Information: Name, Address, Date of Birth
Prescriber Information: Name, Address, Professional Designation, ID Number (NPI or DEA)
Prescription Details:
Date written
Medication: Name, Strength, Dosage Form
Directions for Use
Quantity Dispensed
Number of refills
Equipment Options:
Class III Prescription (Torsion) Balance:
Labor intensive and uses weight sets
Sensitivity Requirement: 6 mg
Min Weighable Quantity: 120 mg
Max Weighable Quantity: 60-120 grams
Electronic Balance:
Easier to use
Sensitivity Requirement: as little as 1 mg
Max Weighable Quantity: Up to 600 grams
Weight Sets:
Weigh boats or weighing papers
Importance of Accuracy:
Calculate and measure the quantity of each ingredient accurately
Metric system primarily used, occasional use of the apothecary system (e.g., fl oz, pint, quart, gallon)
Acceptable error: 5% generally, less for high potency/toxicity drugs
Percent error equation: % = (error/actual) x 100%
Precision Volumetric Glassware:
Features capacity inscribed and calibrated
Types include:
Cylindrical and Conical Graduates
Syringes
Volumetric Flasks
Calibrated Pipettes
Device Selection Considerations:
Use the smallest appropriate device to minimize error
Cannot measure below 20% of capacity
Example: For a 50 ml graduated cylinder, cannot measure <10 ml
For volumes <1 ml, prefer graduated pipet, syringe, or calibrated dropper
Disposable syringes recommended for oily and viscous liquids
Avoid using prescription bottles, non-volumetric flasks, beakers, or household teaspoons for measurements
Preparation for Sterile Compounding:
Handwashing and garbing
Cleaning the IV hood
Accurate calculation and measuring of ingredients
Laminar Airflow Workbench:
Non-hazardous
Two airflow types:
Horizontal: Back to front
Vertical: Top to bottom
Cleaning Protocol:
Clean and disinfect at:
Beginning of each shift
Before each batch
Every 30 minutes during compounding
When visibly soiled or suspected contamination
If hood is turned off, run for 30 minutes before cleaning with sterile water and 70% isopropyl alcohol
Cleaning Steps:
Remove visible solids using sterile water
Disinfect using 70% isopropyl alcohol
Clean:
Pole and Hooks
Sides top to bottom, back to front
Work surface side to side, back to front
Gather Materials:
Include: syringe, bag, needle, alcohol swab, etc.
Work within recommended distance from air source
Keep only necessary equipment inside hood for sterile compounding
Preparation Protocols:
Disinfect vials, ampules, and injection ports using an alcohol wipe
Prepare syringe by removing plastic overwrap
Prepare needle by removing plastic overwrap
Critical Areas:
Identify "critical sites" where contamination might enter
Syringe tips, plunger, needle tips, rubber stopper of vial
Ensure clean air ("first air") is unobstructed from hood to critical sites
Do not place items on the hood surface to maintain sterility
Withdrawal Techniques:
Enter vial with syringe and needle:
Ensure bevel of needle faces up
Needle at a 45-degree angle to stopper
Withdrawal protocol:
Add ~ half the volume of air to the vial as the volume to be withdrawn
Utilize milking technique to prevent overspray from increased pressure in vial
Injection Method:
Ensure the additive port remains in contact with first air
Preferred placement: vertical bag on IV bar
Horizontal bag placement on alcohol wipe
Position additive port closest to the HEPA filter
Inspection Protocol:
Inspect admixture for particulate matter and incompatibilities
Confirm that final container is intact and sterile.