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Laboratory Testing

Before a doctor can diagnose a patient, laboratory tests such as blood work are required.

8,512 Questions

Can white blood cells ingest pathogens?

Yes, white blood cells can ingest pathogens through a process called phagocytosis. This allows white blood cells to destroy and eliminate harmful pathogens, such as bacteria and viruses, from the body.

What is baso in hematology test?

Baso or basophils are cells in the blood that are usually relatively low. When there is an increase in basophils, this could signal an allergic reaction, and inflammatory process, or rarely leukemia.

In an experiment a group that receives treatment is called what?

The group that receives treatment in an experiment is typically referred to as the "treatment group" or "experimental group." This group is exposed to the intervention or manipulation being studied to determine its effect.

What is the first wbc to arrive at the site of tissue damage?

Neutrophils are the first white blood cells to arrive at the site of tissue damage. They are specialized in engulfing and destroying pathogens, debris, and damaged cells to help initiate the inflammatory response and promote tissue repair.

Can a DNA test be conducted between a brother and a sister who have a common mother to see if they have the same father?

In creation a zygote from a father and mother ..DNA is made from 21 chromosomes from a father and 21 others from amother which the sperm and the ovule contains .. so every zygote from the same mother and father have at least 21 chromosomes common in their DNA because they came from the same source but they will differ in some characters according to the sequences of the bases on The DNA so the answer is yes

What is the evidence against therapeutic cloning?

Arguments against therapeutic cloning include concerns about the destruction of human embryos, ethical considerations regarding the creation and manipulation of human life, and potential risks of genetic abnormalities or unintended consequences in the cloned cells. Additionally, there are challenges in regulating and overseeing the use of therapeutic cloning to ensure it is used responsibly and ethically.

Diagnosis 793.1 means what?

Diagnosis code 793.1 refers to "nonspecific (abnormal) findings on radiological and other examination of body structure." It is not specific to any particular condition or disease, and further evaluation may be needed to determine the underlying cause of the abnormal findings.

When the elodea leaf is moved from salt solution n placed back in water what happens to the cells?

When you deal with problems like this, you need to consider diffusion and osmosis. In this case, you would refer to diffusion, which is the movement of water across a membrane from high concentrations to low concentrations (to try to balance the concentrations). First consider what happens to the cells when you place the elodea leaf in the salt solution; the water in the cells tries to balance the high concentration of salt (sodium chloride) in the surrounding solution, so the water leaves the leaf, thus the cells shrink. Now when you put the elodea leaf into regular water again, there is a higher concentration of water in the surrounding environment compared to inside the leaf's cells, so in attempt to balance concentrations, water goes INTO the cells, thus the cells in the elodea leaf swell (expand).

How much does a bone biopsy cost?

The cost of a bone biopsy can vary depending on factors such as the healthcare provider, location, insurance coverage, and any additional tests or procedures needed. It is recommended to check with your healthcare provider or insurance company for specific pricing information.

Why the temperature of agar must be no lower than 45 degree celsius and no higher than 50 degree celsius?

Keeping the temperature of agar between 45-50 degrees Celsius ensures that the agar remains in a liquid state for easy pouring and solidifies quickly to form a uniform gel. Lower temperatures may cause the agar to solidify prematurely, while higher temperatures may degrade heat-sensitive components in the agar.

Are all aerobic bacteria oxidase positive?

yes, all aerobic cells are oxidase positive. The oxidase test is testing for the presence of cytochrome oxidase [by reducing it with an artificial substrate which turns purple when oxidised]. In aerobic cells cytochrome oxidase's normal role is in the electron transport chain, passing electrons from cytochrome c to oxygen.

hence if the cell is aerobic then oxygen is terminal electron acceptor in the cells ETC and thus it will give a positive result in the oxidase test.

What does the one gene-one polypeptide state?

The one gene-one polypeptide hypothesis states that each gene is responsible for producing one specific polypeptide, which is a chain of amino acids that forms a protein. However, this hypothesis has been modified to the one gene-one protein hypothesis because some genes code for non-protein products like RNA molecules.

How does DNA testing work?

DNA testing works by isolating and analyzing the unique genetic material found in an individual's cells. This is typically done by collecting a sample, such as saliva or blood, and then extracting the DNA from the cells. The DNA is then amplified and analyzed to identify specific genetic markers for comparison or identification purposes.

How many bones in one finger?

A finger has three bones called phalanges, except for the thumb, which only has two phalanges.

Why does the palm have more sweat glands than the forearm?

The palm has more sweat glands than the forearm because the palms are more involved in activities that require gripping and manipulating objects, which leads to increased heat production and the need for more efficient cooling through sweating. Additionally, the palms play a crucial role in thermoregulation as they have a higher surface area-to-volume ratio than the forearms.

Process by which a cell takes in material by forming a vacuole around it?

The process you are referring to is called endocytosis. In this process, the cell membrane surrounds and engulfs materials from the external environment, forming a vesicle or vacuole. This allows the cell to internalize substances such as nutrients, hormones, or even other cells.

What is tested with the blood work?

Blood work can test for various things including: levels of different blood cells, cholesterol levels, blood glucose levels, kidney and liver function, hormone levels, and presence of certain diseases or infections.

If my WBC's are high what's wrong?

There is many different things. Find out if they are extremely high! It could mean that the person has a infection. There seems to be to many WBC's in the blood. It usually means that the persons body is fighting some kind of an infection. However, some types of medication can cause this reaction and some types of diseases definitely discuss this with a doctor. I would not be too concerned, because the doctor should catch it if he/she is a good dr. If all of the other results came back ok, it could be something that would be taken care of with antibiotics.

What causes low wbc?

Low white blood cell (WBC) count can be caused by certain viral infections, autoimmune disorders, bone marrow disorders, nutritional deficiencies, or side effects of certain medications such as chemotherapy. It is important to identify the underlying cause to determine appropriate treatment.

What does a CBC blood test look for?

The CBC is used as a broad screening test to check for such disorders as anemia, infection, and many other diseases. It is actually a panel of tests that examines different parts of the blood and includes the following: * White blood cell (WBC) count is a count of the actual number of white blood cells per volume of blood. Both increases and decreases can be significant. * White blood cell differential looks at the types of white blood cells present. There are five different types of white blood cells, each with its own function in protecting us from infection. The differential classifies a person's white blood cells into each type: neutrophils (also known as segs, PMNs, granulocytes, grans), lymphocytes, monocytes, eosinophils, and basophils. * Red blood cell (RBC) count is a count of the actual number of red blood cells per volume of blood. Both increases and decreases can point to abnormal conditions. * Hemoglobin measures the amount of oxygen-carrying protein in the blood. * Hematocrit measures the percentage of red blood cells in a given volume of whole blood. * The platelet count is the number of platelets in a given volume of blood. Both increases and decreases can point to abnormal conditions of excess bleeding or clotting. Mean platelet volume (MPV) is a machine-calculated measurement of the average size of your platelets. New platelets are larger, and an increased MPV occurs when increased numbers of platelets are being produced. MPV gives your doctor information about platelet production in your bone marrow. * Mean corpuscular volume (MCV) is a measurement of the average size of your RBCs. The MCV is elevated when your RBCs are larger than normal (macrocytic), for example in anemia caused by vitamin B12 deficiency. When the MCV is decreased, your RBCs are smaller than normal (microcytic) as is seen in iron deficiency anemia or thalassemias. * Mean corpuscular hemoglobin (MCH) is a calculation of the average amount of oxygen-carrying hemoglobin inside a red blood cell. Macrocytic RBCs are large so tend to have a higher MCH, while microcytic red cells would have a lower value. * Mean corpuscular hemoglobin concentration (MCHC) is a calculation of the average concentration of hemoglobin inside a red cell. Decreased MCHC values (hypochromia) are seen in conditions where the hemoglobin is abnormally diluted inside the red cells, such as in iron deficiency anemia and in thalassemia. Increased MCHC values (hyperchromia) are seen in conditions where the hemoglobin is abnormally concentrated inside the red cells, such as in burn patients and hereditary spherocytosis, a relatively rare congenital disorder. * Red cell distribution width (RDW) is a calculation of the variation in the size of your RBCs. In some anemias, such as pernicious anemia, the amount of variation (anisocytosis) in RBC size (along with variation in shape - poikilocytosis) causes an increase in the RDW. The CBC is used as a broad screening test to check for such disorders as anemia, infection, and many other diseases. It is actually a panel of tests that examines different parts of the blood and includes the following: * White blood cell (WBC) count is a count of the actual number of white blood cells per volume of blood. Both increases and decreases can be significant. * White blood cell differential looks at the types of white blood cells present. There are five different types of white blood cells, each with its own function in protecting us from infection. The differential classifies a person's white blood cells into each type: neutrophils (also known as segs, PMNs, granulocytes, grans), lymphocytes, monocytes, eosinophils, and basophils. * Red blood cell (RBC) count is a count of the actual number of red blood cells per volume of blood. Both increases and decreases can point to abnormal conditions. * Hemoglobin measures the amount of oxygen-carrying protein in the blood. * Hematocrit measures the percentage of red blood cells in a given volume of whole blood. * The platelet count is the number of platelets in a given volume of blood. Both increases and decreases can point to abnormal conditions of excess bleeding or clotting. Mean platelet volume (MPV) is a machine-calculated measurement of the average size of your platelets. New platelets are larger, and an increased MPV occurs when increased numbers of platelets are being produced. MPV gives your doctor information about platelet production in your bone marrow. * Mean corpuscular volume (MCV) is a measurement of the average size of your RBCs. The MCV is elevated when your RBCs are larger than normal (macrocytic), for example in anemia caused by vitamin B12 deficiency. When the MCV is decreased, your RBCs are smaller than normal (microcytic) as is seen in iron deficiency anemia or thalassemias. * Mean corpuscular hemoglobin (MCH) is a calculation of the average amount of oxygen-carrying hemoglobin inside a red blood cell. Macrocytic RBCs are large so tend to have a higher MCH, while microcytic red cells would have a lower value. * Mean corpuscular hemoglobin concentration (MCHC) is a calculation of the average concentration of hemoglobin inside a red cell. Decreased MCHC values (hypochromia) are seen in conditions where the hemoglobin is abnormally diluted inside the red cells, such as in iron deficiency anemia and in thalassemia. Increased MCHC values (hyperchromia) are seen in conditions where the hemoglobin is abnormally concentrated inside the red cells, such as in burn patients and hereditary spherocytosis, a relatively rare congenital disorder. * Red cell distribution width (RDW) is a calculation of the variation in the size of your RBCs. In some anemias, such as pernicious anemia, the amount of variation (anisocytosis) in RBC size (along with variation in shape - poikilocytosis) causes an increase in the RDW.

What is a non-specific test for inflammatory disorders?

One example of a non-specific test for inflammatory disorders is the erythrocyte sedimentation rate (ESR). ESR measures the rate at which red blood cells settle in a tube over time, which can be elevated in many inflammatory conditions but does not indicate a specific disorder. Other non-specific tests include C-reactive protein (CRP) and white blood cell count.

What is S Acin in a urine culture report?

S Acin on a urine culture report likely refers to Staphylococcus saprophyticus, which is a type of bacteria commonly found in the gastrointestinal tract and can sometimes cause urinary tract infections in young women. It is important to consult with a healthcare provider for proper diagnosis and treatment if S. saprophyticus is identified in a urine culture.

What is gray top tube used for in lab draws?

A gray top tube is typically used for collecting blood samples for glucose testing or other tests that require preservation of glucose levels. The tube contains sodium fluoride and potassium oxalate as anticoagulants and preservatives to prevent glycolysis (breakdown of glucose) in the blood sample.