This video shows Dr. Evan Matthews explaining how to assess specific gravity of urine using a refractometer. This is good for assessing acute hydration status. This device can also be used to assess serum protein concentration.

Link to video on how to assess blood electrolyte values.
   • Blood Electrolyte Measurement  

Link to video on how to assess body fat percentage and total water content using bioelectrical impedance.
   • Body Fat Percentage - Bioelectrical I...  


Link to Dr. Evan Matthews website.
https://sites.google.com/site/evanmat...