Blood investigations
| Investigations | Results | Notes |
| Haemoglobin | 139 g L−1 | |
| White blood cells | 8.7 × 109 cells L−1 | |
| Platelets | 441 × 109 platelets L−1 | |
| Eosinophils | 0.22 × 109 cells L−1 | Maximum ever 0.61 × 109 cells L−1 on one occasion only |
| Urea | 7.4 mmol L−1 | |
| Creatinine | 99 mmol L−1 | |
| Potassium | 4.2 mmol L−1 | |
| Sodium | 143 mmol L−1 | |
| Calcium | 2.59 mmol L−1 | |
| Glucose | 5.1 mmol L−1 | |
| TSH | 0.90 mU L−1 | |
| FT4 | 14 pmol L−1 | |
| C-reactive protein | 5 mg L−1 | Stayed normal during all admissions |
| Serum IgE | 7 kU L−1 (normal) | |
| Aspergillus Screen | Negative | |
| ANA, ANCA (PR3 and MPO) | Negative | |
| Fractional exhaled nitric oxide | Negative (highest = 14 ppb) | |
| PCR throat swab | Negative | |
| Sputum C/S | Normal respiratory flora |