Panel Tests In Chemistry Laboratory

The reason why the vacuum tube should not be open before testing for ionized calcium is to preserve the ionized calcium content. Opening the tube could expose the sample to air, which can lead to the loss or alteration of the ionized calcium ions. By keeping the tube sealed, the integrity of the sample is maintained, ensuring accurate and reliable test results for ionized calcium levels.

The correct answer is TSH, T3, and T4 because these three hormones are commonly measured in a thyroid panel to assess the functioning of the thyroid gland. TSH (thyroid-stimulating hormone) is produced by the pituitary gland and stimulates the thyroid gland to produce T3 (triiodothyronine) and T4 (thyroxine). T3 and T4 are the main thyroid hormones that regulate metabolism, growth, and development in the body. Measuring TSH, T3, and T4 levels can help diagnose thyroid disorders such as hypothyroidism or hyperthyroidism. Cortisol, aldosterone, and ADH are not part of the thyroid panel and are not directly related to thyroid function.

The correct answer includes total cholesterol, HDL, LDL, and triglycerides. These are all components of a lipid panel, which is a blood test used to measure the levels of different types of fats in the bloodstream. Total cholesterol refers to the overall amount of cholesterol in the blood, while HDL (high-density lipoprotein) and LDL (low-density lipoprotein) are specific types of cholesterol. Triglycerides are another type of fat found in the blood. These measurements are important for assessing cardiovascular health and determining the risk of developing heart disease.

A gel barrier tube, also known as a serum separator tube (SST), is commonly used for testing ionized calcium levels. The gel in the tube helps to separate the serum from the blood cells, allowing for accurate measurement of ionized calcium. This type of tube is preferred for this test because it prevents clotting and ensures the sample remains stable during transportation and processing. Therefore, the statement "A gel barrier tube (SST) is usually used to test for ionized calcium" is true.

The correct answer includes the ions Na+, K+, Cl-, and HCO3-. These ions are commonly included in an electrolyte panel because they are important for maintaining the body's fluid balance, acid-base balance, and nerve and muscle function. Sodium (Na+) and potassium (K+) are essential for nerve and muscle function, while chloride (Cl-) helps maintain fluid balance and acid-base balance. HCO3- (bicarbonate) is involved in regulating the body's pH levels. Therefore, including these ions in an electrolyte panel allows healthcare professionals to assess a patient's overall electrolyte balance and identify any imbalances that may need to be corrected.

The Renal Function Panel consists of creatinine, Blood Urea Nitrogen (BUN), and uric acid. These three tests are commonly used to assess kidney function. Creatinine is a waste product produced by the muscles and filtered out of the blood by the kidneys. Elevated levels of creatinine may indicate kidney dysfunction. BUN is a measure of the amount of nitrogen in the blood that comes from the waste product urea. High BUN levels can indicate kidney problems. Uric acid is a waste product from the breakdown of purines, which are found in certain foods. High levels of uric acid can be a sign of kidney disease or gout.

The correct answer includes AST, ALT, GGT, bilirubin, total protein, and albumin. These are all markers used to assess liver function. AST and ALT are enzymes found in liver cells and are released into the bloodstream when the liver is damaged. GGT is another enzyme that can indicate liver or bile duct problems. Bilirubin is a waste product produced by the liver and high levels can indicate liver disease. Total protein and albumin are measures of liver synthetic function. FSH, TSH, LH, and estrogen are not typically included in a hepatic function panel as they are hormones related to reproductive function.

The basic metabolic panel (BMP) is a group of blood tests that provides information about a person's metabolism and organ function. The tests included in a BMP are typically used to assess kidney function, electrolyte levels, and blood sugar levels. Glucose, calcium, sodium (Na+), potassium (K+), chloride (Cl-), bicarbonate (HCO3-), blood urea nitrogen (BUN), and creatinine are all commonly included in a BMP because they provide important information about kidney function, acid-base balance, and blood sugar control. These tests help healthcare providers diagnose and monitor conditions such as diabetes, kidney disease, and electrolyte imbalances.

The comprehensive metabolic panel is a blood test that provides information about a person's overall health and organ function. It typically includes tests for glucose (to measure blood sugar levels), calcium (to assess bone health and nerve function), sodium (to evaluate fluid balance), bicarbonate (to measure acid-base balance), blood urea nitrogen (BUN) and creatinine (to assess kidney function), total protein (to evaluate liver and kidney function), bilirubin (to assess liver function), ALT and AST (to evaluate liver health), albumin (to assess nutritional status and liver function), potassium and chloride (to evaluate electrolyte balance), and magnesium (to assess overall mineral balance). The inclusion of water, ATP, and NO3- in the list is incorrect as these are not typically included in a comprehensive metabolic panel.

A Cardiac Panel is a set of tests that are commonly performed to evaluate the functioning of the heart. The panel typically includes creatine kinase, B type Ntriuretic peptide, homocysteine, troponin, and hs-CRP. Creatine kinase is an enzyme found in the heart and its levels can indicate damage to the heart muscle. B type Ntriuretic peptide is a hormone released by the heart in response to increased pressure and can help diagnose heart failure. Homocysteine is an amino acid that, when elevated, can indicate an increased risk of heart disease. Troponin is a protein released into the bloodstream after heart muscle damage. hs-CRP is a marker of inflammation and can be elevated in cases of heart disease.