Test Details
Methodology
Electrochemiluminescence Immunoassay (ECLIA)
Result Turnaround Time
1 - 3 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
To evaluate for evidence of previous SARS-CoV-2 infection in individuals with a history of COVID-19 vaccination to aide in the diagnosis of Multisystem Inflammatory Syndrome in children (MIS-C) or adults (MIS-A). The presence of antibodies specific to the SARS-CoV-2 viral nucleocapsid protein is consistent with natural infection as currently available COVID-19 vaccines induce antibodies against the viral spike protein receptor binding domain (RBD) only.
Limitations
These tests should not be used to diagnosis or exclude acute SARS-CoV-2 infection. The results should always be assessed in conjunction with patient's medical history, clinical presentation, and other findings. Negative test results do not rule out the possibility of an infection with SARS-CoV-2. Serum or plasma samples from the very early (pre-seroconversion) phase can yield negative findings. Therefore, these tests cannot be used to diagnosis an acute infection. It has also been reported that certain patients with confirmed infection do not develop SARS-CoV-2 antibodies. Furthermore, waning of antibody titers has been reported in some individuals within a range of months after infection, a feature which has also been reported for other coronaviruses.
These tests have not been FDA cleared or approved. These tests have been authorized by FDA under an Emergency Use Authorization (EUA). These tests are only authorized for the duration of the declaration that circumstances exist justifying the authorization of emergency use of in vitro diagnostics for detection and/or diagnosis of COVID-19 under Section 564(b)(1) of the Act, 21 U.S.C. 360bbb-2(b) (1), unless the authorization is terminated or revoked sooner. This test has been authorized only for detecting the presence of antibodies against SARS-CoV-2, not for any other viruses or pathogens.
Specimen Requirements
Specimen
Serum or plasma
Volume
2.3 mL
Minimum Volume
1.4 mL (Note: This volume does not allow for repeat testing.)
Container
Gel-barrier tube, red-top tube, or serum transfer tube; or plasma from lithium heparin tube, EDTA, or sodium citrate tube
Collection Instructions
Standard aseptic technique
Stability Requirements
Temperature | Period |
---|---|
Room temperature | 14 days |
Refrigerated | 14 days |
Frozen | 28 days (stability provided by manufacturer or literature reference) |
Freeze/thaw cycles | Stable x3 |
Storage Instructions
Room temperature
Causes for Rejection
Gross hemolysis; visible microbial contamination
LOINC® Map
Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
---|---|---|---|---|---|---|
160236 | SARS-CoV-2 Antibody Profile | 94504-8 | 164069 | SARS-CoV-2 Ab, Nucleocapsid | 94762-2 | |
160236 | SARS-CoV-2 Antibody Profile | 94504-8 | 164091 | SARS-CoV-2 Semi-Quant Spike Ab | U/mL | 94769-7 |
160236 | SARS-CoV-2 Antibody Profile | 94504-8 | 164092 | SARS-CoV-2 Spike Ab Interp | 94661-6 | |
Order Code | 160236 | |||||
Order Code Name | SARS-CoV-2 Antibody Profile | |||||
Order Loinc | 94504-8 | |||||
Result Code | 164069 | |||||
Result Code Name | SARS-CoV-2 Ab, Nucleocapsid | |||||
UofM | ||||||
Result LOINC | 94762-2 | |||||
Order Code | 160236 | |||||
Order Code Name | SARS-CoV-2 Antibody Profile | |||||
Order Loinc | 94504-8 | |||||
Result Code | 164091 | |||||
Result Code Name | SARS-CoV-2 Semi-Quant Spike Ab | |||||
UofM | U/mL | |||||
Result LOINC | 94769-7 | |||||
Order Code | 160236 | |||||
Order Code Name | SARS-CoV-2 Antibody Profile | |||||
Order Loinc | 94504-8 | |||||
Result Code | 164092 | |||||
Result Code Name | SARS-CoV-2 Spike Ab Interp | |||||
UofM | ||||||
Result LOINC | 94661-6 |
Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
---|---|---|---|---|---|---|
Reflex 1 | 164093 | SARS-CoV-2 Spike Ab Dilution | 164093 | SARS-CoV-2 Spike Ab Dilution | U/mL | 94769-7 |
Reflex 1 | ||||||
Order Code | 164093 | |||||
Order Name | SARS-CoV-2 Spike Ab Dilution | |||||
Result Code | 164093 | |||||
Result Name | SARS-CoV-2 Spike Ab Dilution | |||||
UofM | U/mL | |||||
Result LOINC | 94769-7 |