The Total Proteins Serum test is a foundational part of your health panel. It measures the complete amount of all proteins in your blood, primarily albumin and globulins. This total number is a key indicator of your nutritional status, liver function, and kidney health. Low levels can signal malnutrition or kidney loss, while high levels can point to chronic inflammation or immune disorders. This simple blood test provides a vital, top-level summary of your body's core functions.