Table.
Laboratory Data at the Onset of Hypernatremia.
| Parameter | Value | Reference range |
|---|---|---|
| White blood cells (/μL) | 6200 | 3300-8400 |
| Neutrophils (%) | 70.0 | 39.8-70.0 |
| Eosinophils (%) | 0.2 | 0.0-5.4 |
| Hemoglobin (g/dL) | 13.9 | 11.0-14.7 |
| Platelets (×104/μL) | 16.4 | 13.0-34.0 |
| Blood urea nitrogen (mg/dL) | 11.4 | 8.0-20.0 |
| Creatinine (mg/dL) | 0.9 | 0.2-0.8 |
| eGFR (mL/min/1.73 m2) | 48.3 | >60 |
| Total serum protein (g/dL) | 6.7 | 6.7-8.3 |
| Serum albumin (g/dL) | 3.8 | 3.9-4.9 |
| Sodium (mmol/L) | 149 | 135-145 |
| Potassium (mmol/L) | 4.1 | 3.5-5.0 |
| Chloride (mmol/L) | 112 | 98-102 |
| Calcium (mg/dL) | 9.8 | 8.6-10.1 |
| Uric acid (mg/dL) | 3.1 | <7.0 |
| AST (U/L) | 27 | 13-33 |
| ALT (U/L) | 29 | 2-27 |
| CRP (mg/dL) | 0.1 | 0.0-0.3 |
| HbA1c (%) | 6.8 | 4.6-6.2 |
| PR3-ANCA (U/mL; CLEIA) | 3.0 | 0.0-3.5 |
| MPO-ANCA (U/mL; CLEIA) | 0.0 | 0.0-3.5 |
| Plasma osmolality (mOsm/L) | 309 | 275-290 |
| Urinary osmolality (mOsm/L) | 228 | 50-1300 |
| Urinary red blood cells (/HPF) | 1-4 | <1-4 |
| Urinary protein-creatinine ratio (g/gCre) | 0.1 | <0.3 |
| AVP (pg/mL) | 0.4 | - |
eGFR: estimated glomerular filtration rate, AST: aminotransferase, ALT: alanine aminotransferase, CRP: C-reactive protein, PR3-ANCA: anti-neutrophil cytoplasmic antibody specific for leukocyte proteinase 3, MPO-ANCA: anti-neutrophil cytoplasmic antibody specific for myeloperoxidase, CLEIA: chemiluminescent enzyme immunoassay, AVP: arginine vasopressin