Browsing Tag

Infectious Disease

Microbiology

Trichomonas Update

In September of 2015, the Microbiology department rolled out the eSwab™ (single swab) collection device. With the new swab in place, we have updated the methodology for Trichomonas (Test #4201, Epic#LAB252) to the OSOM® Trichomonas Rapid Antigen Test. This specimen is now stable for up to 24 hours ambient (room temperature) and up to 36 hours refrigerated, so there is no need to call for a STAT pick up when using the eSwab™ Trichomonas collection.

Hematology, Microbiology

Malaria Testing Update

Effective June 1, 2016, Malaria testing will be updated. Recommended first line testing for suspected malaria is called Malaria Rapid Screen which is a combination of a rapid BinaxNow test in Hematology and a blood smear review in Microbiology. The BinaxNow test has a reported sensitivity of 97.7% and specificity of 94.2% for detection of P. falciparum species if a patient has a parasitemia level of over 5000 parasites/uL; sensitivity is lower for other malaria species. The BinaxNow test is not reported to cross react with babesia species. BinaxNow testing will be available for all shifts in Hematology at the Spectrum Health Regional Laboratory. The specimen requirements are unchanged from previous malaria testing. Previous test “Malaria Smear for Protozoa” will be discontinued. Continue Reading

Immunochemistry, Referral/Sendouts

Chlamydia Antibody Testing Changes

The Spectrum Health Laboratory is no longer performing the Chlamydia Antibody Screen test (#8874). The reagent the Laboratory was using for this test is no longer available.

Specimens for Chlamydia antibody testing will now need to be sent to Mayo Medical Laboratories for their Chlamydia Serology panel (#37). This panel includes IgG and IgM antibodies to Chlamydia pneumoniae, Chlamydia trachomatis, and Chlamydia psittaci.

It should be noted that cross reactivity commonly occurs between these different Chlamydia species, especially for IgM antibodies. Infection by a particular organism generally yields IgG titers higher than those for non-infecting organisms.

Any questions concerning these changes may be directed to Sue Koekkoek, Medical Technologist in the Immunochemistry Department or to Dr. Richard Horvitz in the Pathology Department.