Change in Troponin I assay method
The new High-sensitivity Troponin I assay (TNIH) will begin use on Wednesday 1st May 2019.
The Clinical Biochemistry Laboratory is changing its method for measurement of Troponin I, as the current Siemens Troponin I Ultra assay is being discontinued. The new High-sensitivity Troponin I assay (TNIH) will begin use on Wednesday 1st May 2019.
Initially, patients needing Troponin I analysis will receive results using both assays (dual-reporting). This will enable any patients with initial investigations prior to the change-over to complete serial testing using the old assay. Any new patients presenting after the change-over should be assessed using the new assay. The dual-reporting period will end at 10:00 on Fri 3rd May, after which all patient samples for troponin testing will be analysed using the new assay only.
When interpreting results using the new assay, clinical teams will need to be aware of a new 99th centile cut-off value of 47 ng/L (as indicated on laboratory reports).
Please contact the Duty Biochemist on 01782 674 265 with any queries.