Table 2 Autoantibody panel results during the patient’s inpatient hospital stay

ANA screen, IFA

Negative

Negative

ESR

17

0–20 mm/h

CRP

0.57

 < 0.50 mg/dL

JO-1 Ab

 < 11

 < 11 SI

PL-7 Ab

 < 11

 < 11 SI

PL-12 Ab

 < 11

 < 11 SI

EJ Ab

 < 11

 < 11 SI

OJ Ab

 < 11

 < 11 SI

SRP Ab

 < 11

 < 11 SI

MI-2 Alpha Ab

 < 11

 < 11 SI

MI-2 Beta Ab

 < 11

 < 11 SI

MDA-5 Ab

 < 11

 < 11 SI

TIF-1y Ab

20

 < 11 SI

NXP-2 Ab

 < 11

 < 11 SI

C3 complement

136

86–184 mg/dL

C4 complement

45

20–59 mg/dL

SSA Ab

 < 1.0 NEG

 < 1.0 NEG

SSB Ab

 < 1.0 NEG

 < 1.0 NEG

Aldolase

 < 1.0

 < OR = 8.1 U/L

Rheumatoid factor

Negative

Negative