Marcela Lemos - Page 4

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Marcela Lemos
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Recent Articles by Marcela Lemos

Prothrombin Time (PT): What Is It, Reference Range & Results

Prothrombin time is a test that evaluates the blood’s ability to clot and stop active bleeding. Normal levels are usually between 10 to 14 s in a healthy individual, but this can vary with medication use and other health conditions. Read more about what causes a high PT or low PT .

Tests

Luteinizing Hormone (LH): Uses, Normal Levels & What Results Mean

Luteinizing hormone (LH) is produced by the pituitary gland and plays a fundamental role in female and male fertility. Learn more about what luteinizing hormone is, what it is for, normal levels and why it may be high or low.

Tests

AST Blood Test: Normal Levels (& What High Levels Means)

The AST blood test, also known as the TGO test, is requested to assess liver function. High AST levels can indicate pancreatitis, hepatitis and cirrhosis, for example. Learn how to understand the TGO-AST test.

Tests

Homocysteine: What Test Results Mean (High & Low Levels)

Homocysteine is an amino acid that is found in food like red meat and seafood. High levels of homocysteine are associated with a higher risk of cardiovascular diseases. Learn more about when this test is ordered, and what high or low levels mean.

Tests

Testosterone Test: Free & Total (What Normal Levels Are)

Testosterone tests (which include total testosterone and free testosterone) are often ordered to assess conditions in both men and women, including menstrual cycle changes, early-onset puberty, erectile dysfunction or infertility. Learn more about the difference between free and total testosterone and the normal levels.

Tests

D-Dimer Test: Why It's Order & Why High Levels Mean

D-dimer is a by-product of fibrin breakdown. Fibrin is a protein that is involved in the coagulation process, and both fibrin and D-dimer can increase with inflammation in the body, thrombosis and disseminated intravascular coagulation. Learn more about D-dimer, why it is ordered, and what high levels mean.

Diseases and Conditions

Ureaplasma: Symptoms, Transmission & Treatment

Ureaplasma is an infection caused by Ureaplasma urealyticum bacteria, that is naturally in the urinary and genital tract. This bacteria can can increase in number due to low immunity. Symptoms of infections include inflammation of the ureth.

Tests

MCV Blood Test: Normal Levels, High or Low MCV & Anemia

The MCV or mean corpuscular volume refers to the size of the red blood cells. It is usually a part of the complete blood count. Learn about what the normal level is, what high or low levels mean, and how it is used to diagnose anemia.

Tests

HOMA-IR & HOMA-BETA: Normal Levels & What Results Mean

The HOMA-IR and HOMA-BETA tests are used to assess insulin resistance and pancreas functioning. They can be beneficial for determining a diabetes diagnosis or assessing a risk for other conditions, like cardiovascular disease or metabolic syndrome. Learn more about what normal levels and what high or low levels mean.

Tests

Albumin Blood Test: High and Low Levels (& What Results Mean)

The albumin blood test is usually ordered by the doctor to investigate for possible kidney or liver problems. It can also help to assess general nutritional status. Learn more about what high and low levels mean, why this test is ordered and what normal levels are.

Tests

Troponin: Normal Levels, What Results Mean & Uses

Troponin is a type of protein that is released into the blood when there is damage to the heart. The troponin test is often used to confirm a possible heart attack, alongside other heart tests. Learn more about what a normal troponin level .

Tests

Eosinophils: Reference Ranges (& What High or Low Levels Mean)

Eosinophils are a type of defense cell in the blood that can increase due to allergies, infections, medications or inflammatory diseases. Results should always be interpreted by the ordering physician to determine an underlying cause. Learn.

Tests

Estradiol Test: Uses, Preparation & Reference Ranges

An estradiol test looks at the levels of this hormone circulating in the blood. It is used to evaluate the functioning of ovaries in women, and the testes in men, especially in cases of infertility. Learn more about what this test is used for and what high or low levels mean.

Tests

Urine Culture: What It Tests, How to Do, & Results

A urine culture test is generally used to diagnose a UTI. This test sects the quantity and type of bacteria present in the urine, as well as the best antibiotics for treatment. Learn more about how to collect a urine specimen for this test, what results mean, and other urine tests available.

Tests

Arterial Blood Gases (ABG's): What It's For & Normal Levels

Arterial blood gases (ABGs) are a blood test done on patients admitted to the hospital. It evaluates whether gases (oxygen and carbon dioxide) are being properly exchanged in the lungs. Learn more about why this test is done, how it's done and what normal levels should be.