Heart disease is an important health concern because, in some individuals, it may develop without obvious symptoms. Signs may only become noticeable when the condition has progressed or complications have occurred. Recognizing cardiovascular risk factors early is therefore an important part of maintaining heart health. Screening may be particularly relevant for people with high blood pressure, diabetes mellitus, high cholesterol, smoking habits, overweight or obesity, a family history of hear...

Influenza A: Understanding the Right Tests for Detection Fever, cough, headache, muscle aches, and fatigue are common symptoms associated with influenza. However, similar complaints can also occur in many other respiratory infections. For this reason, symptoms alone may not be sufficient to confirm Influenza A. One testing option is the Influenza A antigen test. This examination detects viral proteins or antigens in respiratory specimens collected through a nasal or throat swab. One of its...

The heart does more than pump blood throughout the body. Behind every heartbeat is an electrical system that coordinates when the heart muscle contracts, allowing the heart to maintain an organized rhythm. A normal heartbeat begins with an electrical impulse generated by the sinoatrial, or SA, node, often referred to as the heart's natural pacemaker. When the generation or conduction of these electrical signals is disrupted, the heart may beat too fast, too slowly, or irregularly. This condit...

The thyroid gland plays an important role in regulating many processes in the body through the hormones it produces. When thyroid function is disrupted, various symptoms may occur. Blood tests are therefore an important part of assessing thyroid function. TSH and Free T4 as Key Thyroid Tests TSH, or Thyroid Stimulating Hormone, is a hormone involved in regulating the activity of the thyroid gland. In general, TSH levels may be low in hyperthyroidism, while they may increase in hypothyroidi...

Recurring digestive symptoms may require more than an assessment based on symptoms alone. In certain situations, a more comprehensive medical investigation may be needed to identify the underlying cause, particularly when Crohn’s disease is suspected. Crohn’s disease involves inflammation of the digestive tract. Several groups of laboratory tests can provide doctors with valuable information about inflammation, nutritional status, and intestinal health. 1. Blood Tests and Inflammatory Mark...

An occasional sneeze may be completely normal. However, when sneezing occurs repeatedly, it may indicate that the body is reacting to a particular substance, including an allergy trigger or allergen. Allergies occur when the immune system responds to certain substances. Laboratory allergy testing can help identify this response through a blood test that measures Immunoglobulin E (IgE) antibodies. What Is a Total IgE Test? A Total IgE test is a laboratory examination that measures the ov...