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Pediatrics

Test Utilization

Influenza Testing Recommendation (December 2023)

Influenza cases numbers are currently increasing throughout West Michigan. Influenza prevalence guides the most appropriate testing approach and sufficient prevalence has now been reached for influenza rapid antigen or point of care testing (e.g. Sofia instrument) to have improved performance. The use of point of care testing as a screening method during high prevalence reduces both the cost to the patient and turn-around-time as compared to lab-based molecular methods. Point of care tests generally have high analytical specificity, but lack the sensitivity of nucleic acid amplification methods (e.g. PCR). For this reason, PCR testing is still recommended for hospitalized patients and for outpatients with a negative result if influenza is still suspected and if the result will impact clinical decision making.

Low influenza prevalence High influenza prevalence
Recommended order Influenza PCR  Influenza Point of Care Testing
or
Influenza PCR 

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December 14, 2023 by
General Information

Outpatient Lab Draw Site Updates

Effective Monday, October 2, 2023, the Outpatient Lab Draw Sites in Kent, Ottawa, and Muskegon counties (excluding the Zeeland Hospital and Gerber Hospital sites) will begin a new process for walk-in patients.

Registration staff will begin informing the patient of their wait times based on the scheduling template available for that site for that day. This will allow the patient to make an informed decision on whether to wait, come back at a later time, or schedule an appointment time that works best for them. Patients choosing to schedule, may schedule for any available sites, times and dates in MyChart, or they may schedule with the registrar for the next 24-48 hours.  (Note: lab staff does not have the ability to schedule patients.)

Additionally, at this time, Blodgett Outpatient Lab is temporarily closed until further notice. Sites closest to Blodgett are the Integrated Care Campus at 426 Michigan St NE, 4100 Lake Drive, and Integrated Care Campus at 2750 East Beltline, or patients may visit Find a Doctor | Corewell Health to find a lab location nearest to them.

 

September 29, 2023 by
Microbiology

Test Update: Influenza Rapid and RSV Rapid Tests Discontinued

Effective October 3, 2023, Corewell Health Laboratories will discontinue the Influenza Rapid and Respiratory Syncytial Virus (RSV) Rapid tests. These antigen tests are less sensitive than the nucleic acid amplification tests (NAAT; such as PCR) that are now the standard of care for diagnosing these respiratory viruses. Specimen collection remains unchanged with PCR testing available for nasopharyngeal and nasal swabs collected in a universal transport media (UTM) tube.

Discontinued:

• Influenza (Flu) A/B Rapid – Epic Code: LAB9240
• Influenza (Flu) A/B Rapid, Influenza A/B PCR if Negative – Epic Code: LAB2111530
• Respiratory Syncytial Virus (RSV) Rapid – Epic Code: LAB495

Replace with:

• Influenza (Flu) A/B PCR – Epic Code: LAB3255
• COVID-19, Influenza A/B, RSV PCR – Epic Code: LAB1230746

September 20, 2023 by
Referral/Sendouts, Test Utilization

Test Update: COVID-19 Total Antibody Discontinued

Effective August 30, 2023, the COVID-19 Total Antibody test, which includes the qualitative detection of spike and nucleocapsid antibodies against COVID-19, will be discontinued as an orderable test at Corewell Health West Laboratories. Symptomatic patients suspected to have acute COVID-19 infection should be tested using a molecular assay.

To aid in the clinical diagnosis of multisystem inflammatory syndrome in children or adults (MIS-C or MIS-A), the COVID-19 IgG, Qualitative by CIA will be available as a send out test. This test is a qualitative detection of IgG antibodies against the nucleocapsid protein of COVID-19 that develop in response to natural infection with COVID-19. This test is performed on Monday, Wednesday, and Fridays, and reported within 1-5 days. Continue Reading

August 28, 2023 by
Microbiology

Sinus Culture Order Considerations

The management of sinusitis is often aided by bacterial and fungal cultures from which Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, Staphylococcus aureus, and occasionally aerobic Gram-negative bacilli are the most commonly recovered pathogenic organisms. The Corewell Health West Microbiology Lab has several orders available for culturing sinus specimens collected as fluid aspirates, tissue, or swabs. Though more challenging to collect, aspirates are preferred over swab cultures that often grow mixed normal upper respiratory flora for which it is difficult to interpret the clinical significance.

Available Sinus Culture Orders Default Specimen Type Comments
Body Fluid Culture [LAB2111016]

Respiratory Culture [LAB3095]

Tissue Culture [LAB2111173]

 Aspirated fluid

Swabbed collection

Tissue

 For aerobic bacteria
Fungal Culture [LAB240] Aspirated fluid or tissue, preferred

Swabbed collection

 For fungal organisms
Anaerobic Culture [LAB233] Aspirated fluid or tissue* For anaerobic bacteria

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June 30, 2023 by
Education & Training, General Information, Immunochemistry, Test Utilization

Webinar: Optimizing Care of the Respiratory Patient – The Role of Specific IgE Testing

It’s the season of sunshine and blooms which also means it can be a season of sneezing, itching, and a lot of trouble getting a good breath in for some.

⇒Are you prepared to meet the needs of your patients that may be suffering from some of these symptoms?
⇒Are you well versed in the difference between a sensitivity and a clinical allergy and how you can differentiate between the two?
⇒Do you know the resources we have at Corewell Health to assist in these determinations? Continue Reading

June 15, 2023 by
General Information

Update: 35 Michigan Outpatient Draw Site

Effective July 1, 2023, the Corewell Health Outpatient Laboratory at 35 Michigan will restrict our services to pediatric patients.

This change will create an exceptional experience for our smallest patients by decreasing wait times, decompressing the waiting room, and allowing the team to focus on the pediatric experience. There will be exceptions such as “adult” patients followed by the pediatric clinics or parents of children who are also being drawn. We will also continue to see adult patients scheduled by practices located in 25/35 Michigan. Special testing such as Ammonia, Cryoglobulin, Venous Blood Gas, Platelet Aggregation, Cold Agglutinin Titer, Carboxyhemoglobin, Lactic Acid, Lactate/Pyruvate Ratio, Verify Now may still be collected at this site as well. 

Alternative options for patients no longer able to be drawn at 35 MI Lab can be found here: Lab Locations. The nearest location is Butterworth Outpatient Lab, located just off the main Butterworth lobby.

June 12, 2023 by
Test Utilization

Influenza Testing Update: April 2023

This winter, West Michigan influenza infections peaked in December 2022 and significantly declined throughout February and March 2023. Now with a low prevalence of circulating influenza, using the most sensitive diagnostic test is recommended in order to obtain accurate and actionable results. Influenza antigen testing (e.g. Sofia instrument) is no longer appropriate at this time and Influenza PCR testing should be ordered when clinically indicated. Continue Reading

March 31, 2023 by
Toxicology

Update to Vitamin D Testing

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

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February 22, 2023 by