Clinical Context
A typical patient is an adult or pediatric patient presenting for assessment of immune protection against SARS–CoV–2, either after recent vaccination, prior infection, or exposure, or when evaluating immune status before immunosuppressive therapy. The clinician orders the Tru–Immune™ neutralizing antibody test performed by Ethos Laboratories (GenScript® USA). A phlebotomy appointment is scheduled at an outpatient laboratory, hospital outpatient phlebotomy unit, or ambulatory clinic. A blood specimen (serum or plasma per lab instructions) is collected, labeled with patient identifiers, and shipped to Ethos Laboratories under required temperature and handling conditions.
Laboratory processing includes receipt, accessioning, and performing the proprietary neutralization assay that quantifies antibody-mediated inhibition of SARS–CoV–2 spike protein–ACE2 interaction. Results are reported as a numeric neutralizing antibody level and interpretive comment about current neutralizing capacity. The result is routed to the ordering provider via the electronic health record or secure report; clinicians use the result for counseling on infection risk, need for booster vaccination, or managing immunosuppressed patients. Typical sites of service are outpatient laboratory, hospital outpatient, ambulatory clinic, or mobile phlebotomy services. Common clinical indications include post-vaccination immune assessment, evaluation after confirmed or suspected SARS–CoV–2 infection, assessment in immunocompromised patients, and pre-exposure risk evaluation for high-risk procedures or travel.