Hi all, I noticed that some of my question was cut off. When we call the manufacturer and we dont have specific info about how long a control/reagent is out of temp, they tell us to discard it. But here's the catch, since there is no data or information even with adding the expense of a DDL we would most likely be instructed to discard the reagents also.
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Andrea Lombard BSN RN MPH CIC
Community Health Services
Windsor CT
(860)716-4885
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Original Message:
Sent: 05-22-2024 13:31
From: Andrea Lombard
Subject: CLIA waived test controls storage
Hi everyone, an interesting situation has come up and I need your help for data and evidence to make some informed decisions. Best practices count.
- The situation is the storage of CLIA waived controls. Many require refrigeration when not in use. We do that and comply with the temp ranges.
- However, there seems to be no data on what happens if the refrigerator gets too cold (or too warm) and is out of range.
- We have commercial grade refrigerators and keep and monitor a thermometer in each unit.
- However, the thermometer is not a digital data logger (DDL) electronically connected to constant monitoring (like our vaccine storage freezers and refrigerators).
- We monitor Monday through Friday and would not pick up a temp excursion on the weekend.
- When there is a suspect or confirmed temp excursion of an unknown duration of time - even if the control line indicates a valid result - manufacturers are silent on this in their IFUs (no data, since none is required by the FDA) and thus state "when in doubt, throw it out".
- It's getting expensive.
- Of course, when you ask the manufacturer and have some uncertainty – as we all do every weekend when we are not monitoring refrigerators - or identify a temperature excursion of unknown duration -
- what are you doing for CLIA waived storage for controls that require refrigeration?
- Is anyone using a DDL for refrigeration storage for specimen and CLIA waived controls?
- Can you store controls in the same refrigerator as vaccines? (in the past TJC said no, but I can't seem to find the reference).
I sent this out to our APIC community for a response also. Please let us know what you are doing.
In my ongoing search I did find a Q&A on the TJC site that states that meds cannot be stored in the same refrigerator as reagents and specimens. However to check with our Board of Pharmacy. A
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Andrea Lombard BSN RN MPH CIC
Community Health Services
Windsor CT
(860)716-4885
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