Sodium and osmolarity of each symptom attack in a patient with water related episodic vertigo.
| Symptom attack (timeline) | Sodium (mmol/L) | Osmolarity (mOSM/kg) |
|---|---|---|
| 1st | 125 | 260.2 |
| 2nd (4 months) | 121 | 251.4 |
| 3rd (17 months) | 126 | 262.2 |
| 4th (18 months) | 118 | 246.9 |
| 5th (19 months) | 125 | 263.5 |
| 6th (29 months) | 125 | 258.9 |
| 7th (30 months) | 129 | 269.1 |
| 8th (34 months) | 129 | 267.3 |
| 9th (35 months) | 129 | 268.2 |
| 10th (39 months) | 122 | 257.5 |
| 11th (40 months) | 123 | 256.3 |
| 12th (40.5 months) | 118 | 248.5 |
| 13th (43 months) | 124 | 257.7 |
| 14th (57 months) | 120 | 249.1 |
| Normal reference | 135–144 | 285.0–295.0 |