- Health Assessment and Safety
- Serology/infectious Disease
|Application:||Insurance Risk Assessment, Wellness|
|Analytical - Method:||The ZEUS ELISA VZV IgG Test System is designed to detect IgG class antibodies to VZV in human sera. Creation of the sensitized wells of the plastic microwell strips occurred using passive absorption with VZV antigen.|
|Reportable - Test Results Type:||Index Value/OD Ratio Negative Specimens ≤0.90 Equivocal Specimens 0.91 to 1.09 Positive Specimens ≥1.10|
|Units - Conventional:||Index Value/OD Ratio Negative Specimens ≤0.90 Equivocal Specimens 0.91 to 1.09 Positive Specimens ≥1.10|
|Minimum Volume:||10 μL|
|Preferred Volume:||100 µL|
Sample identification is checked in the Set-Up Department. Each sample received is identified by a unique barcode number. This barcode number should be identical for all tubes received, except for the last two (2) digits which are container identifiers, and the barcoded slip ID. These are checked by the accessioning system which requires all tubes along with the slip ID to be scanned thereby verifying that the IDs match. All samples must be accompanied by a consent form (requisition). The consent has space for recording the client’s name, birth date, sex, collection date, client signature, collector’s signature, address, social security number, driver’s license number, and policy number for other identifying factors. The insurance company on the consent dictates which tests are to be run on that sample. All discrepancies are referred to Customer Service for clarification before being processed. All procedures have a minimum sample requirement, along with any alternate acceptable samples (i.e., substituting plasma for serum). If the laboratory is unable to perform the assay due to insufficient sample volume to perform testing, it is reported as QNS (quantity not sufficient) or, if no sample is received, SNS (sample not submitted). Before a result of QNS, SNS or NSA is resulted for a test, every effort must be made to acquire an alternate sample to complete testing. The sample that is chosen must be of the proper matrix, must have been stored according to test stability requirements, must have sufficient volume and must not be needed for additional testing or client requested backup storage. 1. Sample or result is QNS, NSA or SNS for testing. 2. Technologist checks Sample Administration for an alternate aliquot of the same matrix or otherwise appropriate sample type. 3. If testing has been ordered on the chosen CID, the Technologist determines that all testing ordered on the alternate sample has been completed. 4. If no testing has been ordered on the chosen CID, the Technologist consults with the Laboratory Project Manager to determine that the sample may be used for testing. 5. The Technologist reviews the stability requirements of the test(s) and ensures that the chosen sample has been shipped, stored and handled in such a manner as to not compromise test results. 6. The Technologist acquires the specimen and ensures that it is of appropriate volume and that the degree of Hemolysis, Icterus, or Lipemia present in the specimen does not exceed known levels for interference. 7. The Technologist assures that the alternate specimen is delivered to the appropriate site or station for testing. If the test site is internal, the Technologist may alert the department personnel via email, that an appropriate, alternate specimen has been located.
Only freshly drawn and properly refrigerated sera obtained by approved aseptic venipuncture procedures should be used in this assay. No anticoagulants or preservatives should be added. Avoid using hemolyzed, lipemic, or bacterially contaminated sera. If delay in testing is anticipated, store test sera at -20°C or lower. Avoid multiple freeze/thaw cycles that may cause loss of antibody activity and give erroneous results.
|Collection Patient Preparation:||NA|
|Container:||Use only freshly drawn and properly refrigerated sera obtained by approved aseptic venipuncture procedures in this assay (15, 16). Do not use if there are any added anticoagulants or preservatives. Avoid using hemolyzed, lipemic, or bacterially contaminated sera. Store sample at room temperature for no longer than 8 hours. If testing is not performed within 8 hours, sera may be stored between 2 - 8°C, for no longer than 48 hours. If a delay in testing is anticipated, store test sera at –20°C or lower. Avoid multiple freeze/thaw cycles which may cause loss of antibody activity and give erroneous results.|