In mid-September 2017, Spectrum Health Regional Laboratory Immunology department in collaboration with Spectrum Health Adult and Pediatric Rheumatology have made some adjustments to antinuclear antibody (ANA) testing (see below) options.
On May 1, 2017, Spectrum Health Regional Laboratory adjusted the reference range for C-Reactive Protein (CRP) from ≤10 mg/L to ≤5.0 mg/L.
Effective March 20, 2017, Spectrum Health Regional Laboratory’s Immunology department will be switching dsDNA vendors from Varelisa ™ to ThermoFisher/Phadia ™.
Both manufacturers (mfr) have similar methods but different reference criteria presumably due to manufacturer specific dsDNA epitopes identified.
The interpretive cutoffs will be changing, please refer to the table below.
Beginning February 21st 2017, Spectrum Health Regional Laboratory is proud to announce that Cardiolipin IgG/IgM antibody testing will now be performed in-house as discriminatory testing. The tests can be ordered separately or in combination (see New Test Information below).
As of June 21, 2016 the SHRL Immunochemistry department changed methods for Rheumatoid Factor, Quantitative (Test #8522, Epic #LAB206). In terms of interpretations, both methods compared well; however, the actual numerical results between methods are not interchangeable and a reference range change was required. The new ranges are listed below:
Negative : <3.5 IU/ml
Equivocal: 3.5-5.0 IU/ml
Positive: >5.0 IU/ml
This is only in effect at the Spectrum Health Regional Laboratory; Spectrum Health Gerber Laboratory is still performing using the immunoturbidimetric assay.
At this current time, we cannot honor any existing or future requests for Neopterin due to issues with test availability. If this test is needed for urgent clinical reasons please contact Natalie Sluja, Referral department supervisor at (616) 267-2755. We apologize for any inconvenience this may cause.