Blood pressure readings can typically be trusted, but may differ for a variety of reasons, according to the Mayo Clinic. Readings may vary due to anxiety levels, and accuracy of monitors may also differ.
Different types of blood pressure monitors are listed by the Mayo Clinic. Monitors are typically manual or digital and have a cuff and a gauge. Additionally, some monitors are sold with stethoscopes.
The Mayo Clinic reports that anyone diagnosed with high blood pressure should continue to monitor their condition at home. Anyone diagnosed with hypertension should discuss the best method of home monitoring with their physician.