Tissue specimens less than 0.1cm may yield insufficient results if submitted for Tissue Pathology. To make the best use of diagnostic tissue material please follow the below guidelines:
*Place entire specimen in CytoLyt. Do not attempt to make smears from specimen.
Please contact the Corewell Health Pathology Department at (616)267-2622 Mon-Fri, 8am-5pm, or the Corewell Health Laboratory Call Center at (616)774-7721, 24/7 to speak with a Pathologist.
Effective January 4, 2023, the process for reporting the Microalbumin/Creatinine ratio was changed for situations where one of the results, microalbumin and/or creatinine, is below or above the assay’s analytical measuring range (AMR).
Effective February 28th, 2023, Vitamin D 25-Hydroxy Level (25-OH Vitamin D) [LAB535] will be replaced by 25-Hydroxyvitamin Level D2 and D3 [LAB1230925]. Send out testing for 25-Hydroxyvitamin D2 and D3, Serum [LAB1230428] to Mayo will be discontinued. The testing methodology will change from an immunoassay to liquid chromatography-mass spectrometry.
The new test will include concentrations for
- 25-hydroxyvitamin D2
- 25-hydroxyvitamin D3
- 25-hydroxyvitamin D Total
Corewell Health Laboratory (Grand Rapids) Coagulation laboratory is pleased to announce a change to our von Willebrand factor (VWF) activity test. The historical test von Willebrand ristocetin cofactor (LAB335) will be retired and replaced by von Willebrand factor activity (VWF activity, LAB1230904) on January 17, 2023. Continue Reading
Respiratory syncytial virus (RSV) primarily infects pediatric patients, but occasionally infects adults and may be of particular concern for the elderly and immunocompromised. Corewell Health Laboratories offers two tests for RSV. A rapid antigen test may be used to confirm RSV diagnosis in pediatric patients. This test is not approved by the FDA for testing adult patients, so tests will be cancelled if ordered on an off-label age group. There are no age restrictions for RSV testing by way of a molecular panel that also includes COVID and influenza as viruses with overlapping symptoms.
||Epic Test ID
||Nasopharyngeal (NP) swab
||Approved for patients 0 – 18 years of age
|COVID, Influenza, RSV PCR
||Nasopharyngeal (NP) swab
||No age restriction
Starting November 29th, 2022, Corewell Health West, Hematology Laboratories will begin reporting absolute counts for white blood cell (WBC) manual differentials, in addition to relative (percentage) counts. The WBC differential count determines the number of each type of white blood cell present in the blood. It can be expressed as a percentage or as an absolute value. Of these, the absolute value is much more important than the relative value, given that clinically relevant WBC elevations and declines are defined by their absolute numbers, not by their relative proportions, and there is potential for error if this conversion is performed outside the laboratory. Continue Reading
Effective November 21, 2022, the following changes will be made to Meconium Drug Testing (LAB479).
- The cutoff for positivity for the opiate drug class (codeine, morphine, hydrocodone, hydromorphone, oxycodone, and oxymorphone) will increase to 20 ng/g from 10 ng/g.
- The format of reporting will be updated to include discrete reporting fields for all tested analytes. Positive results will no longer be denoted via comments.
The following information was updated in the Lab Catalog.
Effective Tuesday, September 27, 2022, the following laboratories will be going live with the GeneXpert Xpress for COVID-19 testing: Big Rapids, Gerber, Ludington, Pennock, Reed City, United, and Zeeland.
Please ensure your sites are stocked with the correct collection devices listed below in preparation of the changeover. Continue Reading
Effective September 21, 2022, the resulting options for the following Hepatitis lab result components will be updated from “Positive”/”Negative” to “Reactive”/”Nonreactive”. Any additional current resulting options, such as “Equivocal” or “See Comment”, will remain available. This will only affect applicable tests that have not yet been resulted.