Chronic hypertension laboratory findings

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Laboratory Tests

Investigations commonly performed in newly diagnosed hypertension

Tests are undertaken to identify possible causes of secondary hypertension, and seek evidence for end-organ damage to the heart itself or the eyes (retina) and kidneys. Diabetes and raised cholesterol levels being additional risk factors for the development of cardiovascular disease are also tested for as they will also require management.

Blood tests commonly performed include:

• Creatinine (renal function) - to identify both underlying renal disease as a cause of hypertension and conversely hypertension causing onset of kidney damage. Also a baseline for later monitoring the possible side-effects of certain antihypertensive drugs.
• Electrolytes (sodium, potassium)
• Glucose - to identify diabetes mellitus
• Cholesterol

Additional tests often include:

• Testing of urine samples for proteinuria - again to pick up underlying kidney disease or evidence of hypertensive renal damage.

Laboratory Findings

• Urinalysis
• Glucose
• Blood urea nitrogen (BUN) / creatinine
• Basic metabolic panel
• Calcium
• Lipids
• Urinary albumin
• Glomerular filtration rate

Electrolyte and Biomarker Studies

• Electrolytes