Saliva Transport Stability:

SDNA-1000 Post-Collection Saliva Sample Viability and Stability

Saliva has not only been demonstrated to be a robust source of viral RNA but when preserved with Spectrum’s patented preservation solution it has been proven to protect COVID-19 transcripts for an extended period of time, making sample collection and transport to CLIA testing labs more efficient and amenable to global testing.

  • The FDA specifies the SDNA-1000 as the ONLY device that is currently authorized for saliva collection for COVID-19 testing.
    • “Saliva specimens must be collected, transported, and stored using the Spectrum Solutions LLC SDNA-1000 Saliva Collection Device.
  • Rutgers’ Study proved that saliva samples can be shipped and stored at ambient temperatures with no degradation in quality.
    • To support home use of the Spectrum Solutions LLC SDNA-1000 Saliva Collection Device, a Simulated Shipping Study was performed that was designed to evaluate the effect of temperature variation on the stability of SARS-CoV-2 RNA during transport of saliva specimens.
    • The study was conducted using residual clinical specimens that had previously been reported as SARS-CoV-2 positive or negative and stored at -80°C until the start of the study. The SARS-CoV-2 positive specimens were selected based on the Ct values obtained upon initial testing and covered the spectrum of Ct values observed with the assay.
    • The specimens were thawed and then subjected to various thermal profiles which were intended to simulate the extreme temperature conditions that may be experienced in the shipment of specimens during the summer and winter.
    • At the conclusion of each thermal profile, the samples were retested with the Rutgers TaqPath SARS-CoV-2 Assay and the results were compared to those reported upon initial testing at the time the specimens were received.
    • Nineteen out of 20 Low Positive samples (95%) and 10/10 High Positive samples were reported as positive after exposure to the summer and winter temperature excursions.
    • The mean and standard deviation of the Ct values for each gene target was similar before and after simulated shipping, with no evidence of significant degradation of the SARS-CoV-2 RNA.
    • All SARS-CoV-2 negative specimens were reported as “negative.”
    • These results demonstrate that SARS-CoV-2 RNA positive saliva specimens are stable in the SDNA-1000 Saliva Collection Device when exposed to a broad range of temperature conditions.
    • These data support the use of the SDNA-1000 Saliva Collection Device for transport and storage of specimens following home collection of saliva.
  • The SDNA-1000 easily displayed its might in shipping simulations at extreme temperatures for over 10 days with no degradation of sample efficacy, proving sample stability and integrity.
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About the Product

Innovative Engineering SDNA-1000


Spectrum Solutions has manufactured over 20 million Saliva Collection devices for distribution worldwide. Spectrum’s technically superior  SDNA-1000 saliva collection device was engineered to lead the saliva collection industry in molecular diagnostics and clinical research applications delivering the safest and most robust biomaterial collection approach for the detection and diagnosis of disease or viral infection.

  • First saliva collection device to receive EUA authorization for COVID-19 testing
  • First saliva collection device FDA authorized for at-home sample collection
  • Only pain-free biosample collection option for COVID-19 testing
  • Engineered to reduce self-collection error
  • Delivers consistent high-quality, high-yield biosamples
  • 100% inactivation of the live virus
  • 100% bacteriostatic
  • Delivers over a 90% reduction in PPE usage compared to current swab collections for COVID-19 testing
  • Single device preserves both DNA and fragile viral RNA transcripts
  • Device stabilizes and extends biosample viability post-collection over 10 days with no degradation of sample efficacy extending shipping and transport options
  • Saliva collection system mitigates any risk of infection throughout the testing process
  • Pinpoint life-cycle stage of active viral infection
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