Effective December 6, 2021, Spectrum Health Reference Laboratory (SHRL) Coagulation department will go live with a new lot of Prothrombin Time (Protime/PT) reagents. The reference range for the PT will be adjusted to reflect this reagent lot change and align with our Regional Laboratories. The new reference range will be 9.5 – 12.0 seconds. There will be no change to the INR ranges.
| Test | Current Reference Range | New Reference Range |
| Prothrombin Time (PT) | 9.7 – 12.6 seconds | 9.5 – 12.0 seconds |
The following information was updated in the Spectrum Health Laboratory Catalog.
The following information was sent via email or updated in the Spectrum Health Laboratory Catalog.
On Tuesday October 26, 2021, a new lot of aPTT reagent will go live for the Spectrum Health Laboratory Information System starting at 10:00 AM.
• The aPTT therapeutic range for ADULT patients on continuous heparin infusions will be updated to reflect the new reagents. The therapeutic range, for most indications, will be changed from 37 to 52 seconds to a new range of 42 to 57 seconds. UFH anti-Xa therapeutic ranges will remain unchanged (0.3 to 0.7 units/mL). All ADULT nomograms will be adjusted to reflect the new therapeutic ranges.
• For PEDIATRIC patients, aPTT nomograms will no longer be used in this population. Only the unfractionated heparin (UFH) anti-Xa nomograms will remain for PEDIATRIC patients, again with no changes made to their current UFH anti-Xa nomograms.
The following information was updated in the Spectrum Health Laboratory Catalog.
Due to a shortage of testing supplies, Spectrum Health Reference Laboratory (SHRL, Grand Rapids) will be limiting testing methods that utilize dry swabs.
For COVID tests collected in the ambulatory (outpatient) setting, a COVID PCR (LAB1230607) should be ordered and collected on a swab placed in liquid transport media.
The following information was updated in the Spectrum Health Laboratory Catalog.
The following information was updated in the Spectrum Health Laboratory Catalog.
The following information was updated in the Spectrum Health Laboratory Catalog.