Sterility and Asepsis Flashcards
Why can Sterility test be inadequate ?
It only assures that part of the batch sampled is sterile
Sterility testing relies on assurance that the batch was produced under homogenous conditions. TRUE or FALSE
TRUE
When conducting a sterility test, the sample used should be representative of the whole batch. TRUE or FALSE
TRUE
What does the GMP state about Sterility test ?
Sterility test is applied to the finished product as the last step in a series of controlled measures by which sterility is assured. The test should be validated for the products concerned
Sterility tests should include samples from parts of the batch particularly at risk. TRUE or FALSE
TRUE
In filled containers, at what point are samples particularly at risk ?
At the beginning and end of the batch
During heat sterilisation, at what point are samples particularly at risk ?
During the coolest part of the process. Therefore samples should be taken from the coolest part of the load
State the most common sterility test used ?
BP Sterility test (adopted by the European Pharmacopoeia)
The BP Sterility test is incredibly complex and requires dedicated facilities such as ?
- Grade A laminar airflow cabinet in Grade B environment
- Expensive machinery
(- Often automated as of recent)
Name the 2 methods used in BP Sterility testing. Which is preferred ?
1) Membrane Filtration (Preferred method)
2) Direct Innoculation
During membrane filtration, the product is filtered through a 20mm disc. TRUE or FALSE
FALSE. It is filtered through a 50mm disc
During membrane filtration, the culture media should be incubated for at least hoe many days ?
Specify at which temperatures for bacteria and fungi
7 days
30-35 degree celcius for Aerobic and Anaerobic bacteria
20-25 degree celcius for Fungi
During Direct Innoculation, the product is filtered into the culture media. TRUE or FALSE
FALSE. The product id transferred directly into the culture media
Direct Innoculation allows for the sample of dry products such as powders for injections and dressings. TRUE or FALSE
TRUE
Direct Innoculation can be used for liquid products although what needs to occur in order for the process to work ?
The liquid must be at least 10x dilute
Direct Innoculation involves the incubation of liquid products for how many days ?
14 days. (Growth found means batch is compromised)
Sterility testing isn’t performed in hospital manufacture. TRUE or FALSE. Why ?
TRUE.
1) Products aren’t produced in batches
2) Sterility test can take up to 14 days (and most products have short expiry dates)
We can assure sterility upon receiving sterile product from manufacturer by adhering to GMP through quality assurance processes such as ?
- Aseptic process
- Quality control of materials
- Validate all processes
- Air quality monitoring
- Routine environmental monitoring
- Cleaning process
- Training
Define Asepsis
The (continuous state of) absence of harmful bacteria, viruses and other microorganisms (in other words sterility)
Define Aseptic
Free from contamination caused by harmful bacteria, viruses or other microorganisms
Medicines Act 1968 has been replaced with ?
Human Medicines Regulations 2012
What does Part 3 of the Human medicines regulations 2012 state ?
Without a manufacturers licence, a person may not assemble or import (from a state other than an EEA state) any medicinal product
What does Section 10 of the Part 3(Regulation 17) allow ?
Allows pharmacies to assemble products w/out a manufacturers licence
Manufacture includes any process carried out in the course of making a product
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