Table 2. Infectious laboratory results for 2 adolescents after multisystem inflammatory syndrome in children symptom onset and throughout hospitalization, United States*.
| Laboratory test | Case-patient 1 | Case-patient 2 |
|---|---|---|
| SARS-CoV-2 spike IgG | Positive | NA |
| SARS-CoV-2 nucleocapsid IgG | Positive | Positive |
| SARS-CoV-2 PCR | Negative | Positive† |
| Other respiratory pathogen panel PCR | Negative | Negative |
| Blood culture, peripheral, 2 sets | Negative | Negative |
| Urine culture | Negative | Negative |
| Epstein Barr virus ab panel | Consistent with prior infection | Negative |
| Gastrointestinal pathogen panel PCR | Negative | NA |
| Group A Streptococcus throat PCR | Negative | NA |
| Quantiferon tuberculosis gold | Negative | NA |
| HIV Ag/Ab, 4th-generation | NA | Nonreactive |
| Rapid plasma regain | NA | Nonreactive |
| Parvovirus IgM and IgG | NA | Negative |
| Anti-streptolysin-O | NA | Negative |
| Anti-deoxyribonuclease B | NA | Negative |
*Ag, antigen; Ab, antibody. †Case-patient 2 had a positive SARS-CoV-2 PCR result on day-of-illness 11, followed by a negative result on day-of-illness 19.