If a physical examination and medical history are not sufficient to determine the cause of night sweats, several tests may be necessary.
Initial Diagnostic Tests for Night Sweats
The following tests are typically performed when the cause of night sweats is not immediately clear:
| Test | Purpose |
|---|---|
| Complete Blood Count (CBC) | Checks for infections, anemia, and other blood disorders that may be related to night sweats. |
| Purified Protein Derivative (PPD) or Quantiferon Assay | Tests for tuberculosis, a common cause of night sweats, especially in high-risk populations. |
| Thyroid-Stimulating Hormone (TSH) | Assesses thyroid function, as hyperthyroidism can cause night sweats. |
| HIV Test | Screens for HIV infection, which can present with night sweats, among other symptoms. |
| C-Reactive Protein (CRP) Level | Measures the level of inflammation in the body, which might indicate an underlying inflammatory condition contributing to night sweats. |
| Chest Radiography (X-ray) | Looks for lung abnormalities or infections, including tuberculosis, that may be the source of the night sweats. |
Other Potential Tests
Depending on the results of these initial tests and a patient's specific symptoms, other tests may be ordered by a medical provider. These might include additional blood work, imaging scans, or biopsies.
