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Laboratory Services

General Information

Test Update: Drug Screening Updates

Effective September 3, 2025, Drug Screen with Alcohol and Drug Screen without Alcohol will be discontinued for inpatient testing. The replacement test would be Drug Screen, Immunoassay, Urine [LAB677] for ED and inpatient.
Drug Screen Toxicology, Immunoassay, Urine [LAB3227] is available for outpatient testing.
For any questions or concerns, please contact your account manager or use the contact us link above.

Test Information

Discontinued Tests:
  • Drug Screen with Alcohol, Immunoassay, Urine [LAB2111694]
  • Drug Screen without Alcohol, Immunoassay, Urine [LAB2111041]
August 28, 2025 by
General Information

MRSA PCR: Updated indications for ordering

Effective Date: September 3, 2025

The MRSA Screen PCR [LAB1231076] detects the presence or absence of colonization with methicillin-resistant Staphylococcus aureus (MRSA) and may be used to guide antimicrobial prophylaxis decisions. To improve and standardize test utilization across all Corewell Health regions, the following restrictions will be added to this test order:

  • Ordering will be restricted to one test every 7 days.
  • An indication for ordering must be provided for each order. Acceptable indications are:
    • Pneumonia
    • Skin and soft tissue (use for non-purulent infections)
    • Surgical prophylaxis

Studies have shown that there is minimal utility in re-testing within 2 weeks as MRSA conversion rates are low and the PCR negative predictive values remain high for at least 14 days after initial testing.

Absence of nasal colonization with MRSA cannot be used to reliably rule out MRSA infection in scenarios other than those listed above.

Test Information

MRSA Screen PCR [LAB1231076]

August 20, 2025 by
Hematology

Hematology Testing Updates (Corewell Health West Michigan)

Effective Wednesday, July 30, 2025, changes to result reporting will be implemented across all Hematology Departments at Corewell Health Laboratories. These updates will help align all regions within Corewell Health Hematology Departments to provide a high-quality and standardize patient care experience.

The following are the most impactful changes for the Corewell Health West Michigan Region: Continue Reading

July 18, 2025 by
General Information

Test Update: PD-L1

Effective July 30, 2025, PD-L1 testing will be performed at Corewell Health Reference Laboratory East and will no longer be a sendout to Neogenomics. Collection instructions and other information may have changed, please visit the lab catalog for more information.

For questions and inquiries, please use the “Contact Us” link above.

 

TEST INFORMATION

New test: PD-L1 [LAB3658]

Former test: PD-L1 to Neogenomics (LAB848)

July 18, 2025 by
General Information

Reminder: Specific Tests and Their Collection Sites (Corewell Health West)

In January 2025, Corewell Health Laboratories closed Butterworth Outpatient Lab (100 Michigan St.) and opened a new draw site at 275 Michigan Street.

With this transition, there are changes to the testing services previously provided at Butterworth Outpatient Lab. The following tests cannot be collected at the outpatient draw site at 275 Michigan but can be collected at the Lab at the Outpatient Center in 35 Michigan St., regardless of the patient’s age:

  • Ammonia
  • Cryoglobulin
  • Venous Blood Gas
  • Platelet Aggregation
  • Cold Agglutinin Titer
  • Carboxyhemoglobin
  • Lactic Acid
  • Lactate/Pyruvate Ratio
  • Verify Now
  • Gene Therapy High Sensitivity Troponin I

Please note that some of these tests can be drawn at other Corewell Hospital Lab locations within the system, but not all. Check the lab catalog for specific requirements for these tests (e.g., authorization needed, by appointment only, etc.). Ensure this information is communicated to your patients for whom these tests have been ordered.

July 3, 2025 by