High blood pressure is classified as a “silent killer” because it typically has no symptoms associated with it. High blood pressure is usually identified during a routine medical examination, when your blood pressure is taken during a routine checkup. High blood pressure, also known as hypertension, is present when your blood pressure reading is 140 mmHg / 90 mmHg (systolic/diastolic).
 
Prehypertension is defined by a blood pressure reading that is above 120 mmHg / 80mmHg.

Diagnosis
The following tests and procedures may help you find out if you have high blood pressure, and may help you identify coexisting conditions that may be causing high blood pressure:

• Online Self-assessments – Self-assessments, such as the Candidiasis Self-assessment and the Magnesium Assessment, can help you determine some of the root cause(s) of your chronic conditions. Learn more about Self-assessments.
• Lipid Profile – A blood test that measures your good HDL cholesterol, bad LDL cholesterol, and triglycerides. An imbalance of cholesterol and triglycerides may coexist with high blood pressure. Read more about cholesterol.
• Urine Creatinine Test — A urine test that measures creatinine levels. Higher than normal levels of creatinine may indicate kidney dysfunction, a sign of chronic high blood pressure (hypertension).
• Electrocardiogram (EKG) or Echocardiogram — These tests may be conducted to evaluate heart health. An underlying heart condition may cause symptoms of high blood pressure.