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Table 2 Rheumatologic lab results and normal values

From: Leukoencephalopathy and cerebral edema as the presenting manifestations of SLE in an ANA-negative adolescent female: a case report and review of literature

Lab Test

Patient Value

Normal Value

CRP

< 0.5 mg/dL

< 1.0 mg/dL

ESR

9 mm/hr

0–20 mm/hr

Complements (C3, C4)

C3: 12 mg/dL

C4: 2 mg/dL

C3: 65–180 mg/dL

C4: 13–52 mg/dL

beta 2-glycoprotein IgA QN

7.0 Units/mL

0.0–6.9 Units/mL

beta-2 glycoprotein IgG QN

5.8 Units/mL

0.0–6.9 Units/mL

beta-2 glycoprotein IgM QN

1.1 Units/mL

0.0–6.9 Units/mL

anti-cardiolipin antibody IgA

5.9 APL Units

> 22 APL Units may be clinically significant

anti-cardiolipin antibody IgG

6.5 GPL Units

0.0–9.9 GPL Units

anti-cardiolipin antibody IgM

4.8 MPL Units

0.0–9.9 MPL Units

lupus anticoagulant

31.6 s

24.3–42.6 s

ANA

< 1:40

< 1:80

Anti-dsDNA (on presentation)

82.2 IU/mL

0.0–9.9 IU/mL

Anti-dsDNA (13 months after treatment)

8.6 IU/mL

0.0–9.9 IU/mL

Anti-Smith

> 8.0

> 1.0 Test Value Positive

Anti-SSA EIA

> 8.0

> 1.0 Test Value Positive

Anti-SSB EIA

1.2

> 1.0 Test Value Positive

Anti-RNP

2.1

> 1.0 Test Value Positive

Anti-Smith/RNP EIA

5.7

> 1.0 Test Value Positive

Anti-Ribosomal P EIA

> 8.0

> 1.0 Test Value Positive

Anti-Neuronal serum Ab

> 400 Units

0–54 Units