COVID-19
Northwest Laboratory is a national clinical laboratory offering high-volume, rapid turnaround COVID-19 testing services. Our seasoned staff of pathologists, scientists, technologists and support personnel are committed to delivering high-quality test results within 24-48 hours of receipt at our facility.
As an organization, we are aware that the topic of COVID variants has become of concern, and we will continue to service our clients, community and general public with COVID-19 testing that includes detection of the Omicron Variant. We perform RT-PCR testing for SARS-CoV-2 that detects signals from 3 different SARS-CoV-2 genes (S, N, and ORF1a/b).
- The Omicron variant has a mutation in the S gene that causes the gene signal to be lost. However, the remaining two gene signals are still present. This is called SGTF (S gene target failure) or S gene dropout.
- A RT-PCR test result which shows the remaining two gene signals, but not the S gene signal, is a positive result that is highly likely to be Omicron based on our knowledge at this time (the same situation was noted for the alpha variant [UK Variant], which also has an S gene mutation).
- RT-PCR is routinely performed for all SARS-CoV-2 RT-PCR testing offered by ADx Health and performed by Northwest Laboratory and provides a rapid ability to detect specimens that are likely to be Omicron.
- Northwest Laboratory will not report the presence of a specific variant; only whether the sample is positive or negative for SARS-CoV2.
- Positive SGTF specimens will be sent to the Washington State Department of Health Laboratory for whole genome sequencing and variant identification.
With the emergence of any new variant, we advise the public to follow CDC recommendations on how to protect yourself and others.
Significant Testing Capacity
- Active capacity of 25,000 COVID-19 tests per day, with the ability to expand as demand grows.
- Over 2 million COVID-19 PCR tests performed to date.
- Robust and reliable supply chain with a significant inventory of reagents and supplies currently on hand.
Rapid Turnaround Time
- Test results are available within 24-48 hours of receipt in our laboratory.
- Highly automated laboratory enables greater capacity, faster results and reduced errors.
Responsive, Professional COVID-19 Testing Support
- The Operations Team is professional and highly responsive.
- Quick implementation of electronic interfaces with most EMR/LIS platforms provides for smooth and efficient transmission of orders and reports.
- Specimen collection kits are provided at no cost.
- Transportation of specimens is arranged and paid for by Northwest Laboratory.
Experienced Scientific Leadership
- Northwest Laboratory has been providing high-quality professional pathology and laboratory services for more than 30 years.
- COVID-19 operations are led by molecular biologists Greg Wolgamot, MD, PhD, and Ryan Fortna, MD, PhD, both with extensive experience in PCR methodology.
Highly Reliable Test Results
- Utilizing the Thermo Fisher TaqPath™ COVID-19 RT-PCR assay, considered the industry gold standard for COVID testing.
- The assay detects three viral genes, providing exceptional sensitivity and specificity. Reliably detects UK variant and other strains.
- Every positive result is reviewed by a lab technologist to ensure accuracy.
Specimen Collection
NWL accepts the following specimens:
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- Anterior nares swabs
- Nasopharyngeal swabs
- Bronchoalveolar lavage (BAL) fluid
- Saliva
COVID-19 Test Requisition Form
Download the COVID-19 Test Requisition Form below:
Additional Resources
These resources below offer current and up-to-date information on COVID-19 testing:
Fact Sheets for COVID-19 Authorized Tests
FACT SHEET FOR PATIENTS: Thermo Fisher Scientific, Inc. TaqPath™ COVID-19 Combo Kit and TaqPath™ COVID‑19 Combo Kit Advanced.
FACT SHEET FOR HEALTHCARE PROVIDERS: Thermo Fisher Scientific, Inc. TaqPath™ COVID-19 Combo Kit and TaqPath™ COVID‑19 Combo Kit Advanced.
For scheduling, results, or general questions related to COVID-19 testing,
please call our Customer Service Team at 360-527-4592 or email COVID19@nwlaboratory.com.
The Customer Service Team is available Mon-Fri:
7am-10pm; Sat & Sun 8am-10pm PST.
To learn how to obtain
Rapid, Accurate COVID-19 Testing
for your organization or clinic, contact our Client Care Team: