Table 5 Validation for assessment of melatonin levels in one body fluid versus another. ‘V’ means validation exist, ‘?’ means that, to our knowledge, no validation exists
From: Melatonin levels in the Alzheimer’s disease continuum: a systematic review
AD continuum | Healthy volunteers | |
|---|---|---|
CSF versus pineal gland | V | ? |
Blood versus CSF | ? | V |
Saliva versus blood | ? | V |
Urine versus blood | ? | V |