Comments on: Certified laboratories – internal https://biocrates.com Thu, 19 Feb 2026 10:44:54 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Admin https://biocrates.com/certified-laboratories-internal/#comment-49 Mon, 16 Dec 2024 07:53:52 +0000 https://biocrates.com/?page_id=273115#comment-49 In reply to Anonymous.

Yes, quantification ranges, called lower and upper limit of detection (LLOQ, ULOQ) can be included in WebIDQ results exports. The option “Show analytical details” needs to be activated. See WebIDQ user manual, section “Display options”, https://webidq.biocrates.com/manual/Results/123872#185004.

]]> By: Anonymous https://biocrates.com/certified-laboratories-internal/#comment-48 Mon, 16 Dec 2024 07:52:56 +0000 https://biocrates.com/?page_id=273115#comment-48 Question: Customers are interested in metabolite quantification ranges. Can they be included in WebIDQ results exports?

]]> By: Anonymous https://biocrates.com/certified-laboratories-internal/#comment-47 Fri, 13 Dec 2024 13:29:00 +0000 https://biocrates.com/?page_id=273115#comment-47 In reply to Admin.

Thanks for the answer

]]> By: Admin https://biocrates.com/certified-laboratories-internal/#comment-46 Fri, 13 Dec 2024 13:22:36 +0000 https://biocrates.com/?page_id=273115#comment-46 In reply to Anonymous.

Analyzing the same sample with different kit runs may lead to slightly different results. This applies especially for metabolites of the analyte classification T2, see WebIDQ user manual, section “Analyte classification”, https://webidq.biocrates.com/manual/quantification/264082#282596. To receive reproducible results, applying target value normalization is recommended, see WebIDQ user manual, section “Data normalization”, https://webidq.biocrates.com/manual/Results/123872#172910.

]]> By: Anonymous https://biocrates.com/certified-laboratories-internal/#comment-45 Fri, 13 Dec 2024 13:21:49 +0000 https://biocrates.com/?page_id=273115#comment-45 Question: Kit data from previous and current runs of the same sample resulted in different concentrations. What is the reason for this?

]]> By: Admin https://biocrates.com/certified-laboratories-internal/#comment-44 Fri, 13 Dec 2024 13:08:54 +0000 https://biocrates.com/?page_id=273115#comment-44 In reply to Anonymous.

MS sensitivity loss is commonly seen first in negative ion mode. The MS mass accuracy may be a bit off. Tuning and calibrating of the MS in positive and negative ion mode may solve the issue.

]]> By: Anonymous https://biocrates.com/certified-laboratories-internal/#comment-43 Fri, 13 Dec 2024 13:07:43 +0000 https://biocrates.com/?page_id=273115#comment-43 Question: The MS sensitivity in negative ion mode has dropped. How can this issue be solved?

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