B12 testing issue – cattle

Our team have identified an instrument issue with our serum B12 analyser. This issue has caused some variability with results that are close to the limit of quantification (LOQ) for this test within the last 2 weeks. We are working with the instrument supplier to fix this issue, and until it is resolved we will subcontract this testing to another approved laboratory.

𝐖𝐡𝐚𝐭 𝐝𝐨𝐞𝐬 𝐭𝐡𝐢𝐬 𝐦𝐞𝐚𝐧 𝐢𝐟 𝐲𝐨𝐮 𝐡𝐚𝐯𝐞 𝐫𝐞𝐜𝐞𝐢𝐯𝐞𝐝 𝐫𝐞𝐬𝐮𝐥𝐭𝐬 𝐟𝐨𝐫 𝐜𝐚𝐭𝐭𝐥𝐞 𝐬𝐞𝐫𝐮𝐦 𝐁𝟏𝟐 𝐢𝐧 𝐭𝐡𝐞 𝐥𝐚𝐬𝐭 𝟐 𝐰𝐞𝐞𝐤𝐬?

This variability only affects results close to the lower end of the reference interval. Some samples have been reported as low, whereas they are possibly within normal limits. We are currently retesting samples that have been reported as lower than the normal range during the affected period and you may receive an amended result for these if there are any changes.

> If you have questions about a particular case, please email the case details to 𝗱𝘂𝗻𝗲𝗱𝗶𝗻.𝘃𝗲𝘁𝗹𝗮𝗯@𝗴𝗿𝗶𝗯𝗯𝗹𝗲𝘀.𝗰𝗼.𝗻𝘇, and one of our team will get into contact with you.

𝐍𝐞𝐰 𝐁𝟏𝟐 𝐭𝐞𝐬𝐭𝐢𝐧𝐠 𝐦𝐞𝐭𝐡𝐨𝐝

With the disruption of availability of the Cobalt75 supply out of Ukraine/Russia, we have recently validated a new B12 method. This new methodology passed our validation process, and we are confident with the detection performance of this method. The erroneous results we have been experiencing over the last 2 weeks are due to an instrumentation issue, not to the new method we are now using.