| | Laboratory investigation | Result |
| | CBC | Hemoglobin: 14.7 g/dL, WBC: 8.7 × 103, lymphocytes: 0.683 × 103, platelets: 159 K/μL | | Serum electrolytes | Sodium: 138.2 mmol/L, potassium: 2.7 mmol/L, chloride: 101 mmol/L | | Serum chemistry | Glucose: 123 mg/dL, creatinine: 0.8 mg/dL, urea nitrogen: 13 mg/dL | | Liver panel | AST: 19 IU/L, ALT: 13 IU/L, albumin: 4.2 g/dL, total bilirubin: 0.7 mg/dL | | Urinalysis | pH: 8, leucocytes: 0–2/HPF, erythrocytes: 0/HPF, tubular cells: 0/HPF | | Urinary electrolytes | Sodium: 114 mmol/L, potassium: 32 mmol/L, chloride: 57.3 mmol/L, creatinine: 31.8 mg/dL | | Urinary anion gap | 76 mmol/L | | Blood gas | pH: 7.12, HCO3: 11 mmol/L, pO2: 31 mmHg, pCO2: 37 mmHg, saturation: 37% | | Serum anion gap | 10 mEq/L | | Thyroid panel | TSH: 2.06 μIU/mL, free T4: 0.94 ng/dL | | Acute phase reactants | ESR: 31 mm/h, CRP < 0.5 mg/L | | Virus panel | HIV-negative, HBV-negative, HCV-negative | | Rheumatoid factor | IgM: 155.7 IU/mL, IgG: 6.7 IU/mL, IgA: 12.2 IU/mL | | ANAs by IFA | 1 : 5120 fine speckled | | SSA/SSB by ELISA | 200.14/19.67 IU/mL | | Unstimulated whole saliva flow, without anesthesia | 1.4 mL/15 minutes | | Minor salivary gland | Positive, focus score of 5 | | Schirmer’s test | Right eye: 7 mm, left eye: 10 mm |
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