RPD report for NA Matrix (Swabs / Wipes)

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RPD report for NA Matrix (Swabs / Wipes) - Error trying to report RPDs for swabs / wipes with NA matrix.

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Mike_A		#1 Posted : Monday, July 12, 2021 1:48:06 PM(UTC)
Rank: Newbie Reputation: Groups: Registered Posts: 3 Location: Sydney		I'm having no luck getting RPDs to report for swabs with a NA matrix. The sample is a Swab/Wipe from the lab, with PFAS results reported in µg/swab under a "Matrix_Type" : WIPES, with a "Matrix_State": NA. - Chemistry tables seems to report fine. QA tables produce an error in online, (photo attached), and a whack table in desktop, showing a surrogate.. (photo attached). If I change the Matrix_State to a solid or liquid, then the RPD tables in online work, however they show 50+ unit converstion problems as they want to convert from µg/swab to mg/kg or ug/L. I can't find any information on additional matrix types reporting QA info, only creating for summary tables. Is there anythign else I should look at to get QA stats on wipes/swabs working? desktop.PNG (21kb) downloaded 1 time(s). online.PNG (8kb) downloaded 1 time(s).


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Nick Support		#2 Posted : Monday, July 12, 2021 2:09:19 PM(UTC)
Rank: Administration Reputation: Groups: Registered, Administrators Posts: 327 Was thanked: 29 time(s) in 29 post(s)		Hi Mike, What happens if you change the Matrix Type assigned to the samples to Other (rather than WIPES)? Do the RPDs work then? Thanks, Nick
		WWW

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Mike_A		#3 Posted : Monday, July 12, 2021 2:25:00 PM(UTC)
Rank: Newbie Reputation: Groups: Registered Posts: 3 Location: Sydney		Hi Nick, if I change it to "other" ( Matrix_State = solid, see sdditioanl matrix states.PNG (10kb) downloaded 0 time(s).attached image), then there is no change to the RPD table (desktop), but the chemistry table then doesn't work, only showing some PFAS-TOP Assay analytes (when all chemistry results, pre and post TOP Assay, show under "wipes). The chemistry table in online shows multiple unti conversions required - it's basically the same as if i had changed the matrix state of 'wipes' to solid. Cheers, Mike


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Nick Support		#4 Posted : Monday, July 12, 2021 2:43:04 PM(UTC)
Rank: Administration Reputation: Groups: Registered, Administrators Posts: 327 Was thanked: 29 time(s) in 29 post(s)		Hi Mike, I was able to replicate your scenario in my local system by assigning some data to a Matrix Type with a Matrix State of NA, giving me the same error in the Web Interface. We will look into this and get back to you. Thanks, Nick
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Nick Support		#5 Posted : Monday, July 12, 2021 4:14:18 PM(UTC)
Rank: Administration Reputation: Groups: Registered, Administrators Posts: 327 Was thanked: 29 time(s) in 29 post(s)		Hi Mike, We found an issue in the RPD calculation when the Matrix State was set to NA. We have now fixed this and released a patch for the Web Interface. If you run the RPD report through the Web Interface it should now work correctly for you. Thanks, Nick
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Mike_A		#6 Posted : Wednesday, July 14, 2021 7:48:40 AM(UTC)
Rank: Newbie Reputation: Groups: Registered Posts: 3 Location: Sydney		Hi Nick, Thanks for the patch, and for getting to it quickly - i've just tested this in online and yes - it is now working for NA :) I assume a fix will be included in the next update for desktop as well? Cheers, Mike


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