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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 you take meds before blood tests?

It is important to follow the instructions given by your healthcare provider on whether or not you can take medication before a blood test. Some medications can interfere with the results of the blood test, so it's best to check with your healthcare provider first.

Can two O Positive parents have an RH Negative child?

Absolutely yes. This is an example of Mendelian genetics (i.e. dominant vs recessive). The "rhesus factor" is a protein on the surface of red blood cells. Positive means that you make the protein, negative means that you don't. Since you only need one functioning copy of the gene for this protein to make the protein, the functional gene is "dominant." Someone who is rhesus positive can have either 1 or 2 functional copies of the gene. In genetics, this is written "RR" or "Rr," where the capital letter represents the functional copy of the gene. When two people who are "Rr" have children, each child inherits one copy of the gene from each parent. Each parent can pass on either the "R" or the "r" version. The chance that each child will be "rr" and be Rh negative is 25%. The "r" version of this gene is pretty common, especially in caucasians, so it is not unusual for people who are Rh positive to have one copy of the "r" version of the gene.

The o part of the blood type is a separate gene. This is recessive, which means that o parents will always have o children.

What does Hematology lym?

Hematology is the study of blood and blood-forming tissues, while lymph is a type of white blood cell that plays a role in the immune system. Lymphocytes are important in recognizing and fighting off infections and diseases. Hematology often involves analyzing the levels and types of lymphocytes in the blood to monitor a person's immune system health.

What color tube is used for bmp?

A red-top or gold-top tube is typically used for a Basic Metabolic Panel (BMP) test. It may vary depending on the laboratory or specific requirements, so it's always best to check with the specific facility where the test is being performed.

When someone is fasting before having blood work done can they have coffee or tea?

It is typically advised to avoid consuming coffee or tea when fasting before blood work, as they can affect certain blood test results (e.g., glucose levels). It's best to stick to plain water during the fasting period to ensure accurate test results.

How long can you keep urine sample if it is for kidney testing if held in a plastic container?

A urine sample for kidney testing can typically be kept in a plastic container at room temperature for up to 24 hours. It should be securely sealed and stored in a cool, dark place to prevent contamination or deterioration of the sample. If the sample cannot be tested within 24 hours, it is recommended to refrigerate it or use a preservative to maintain its integrity.

What is the creatinine clearance test?

The creatinine clearance test measures how well the kidneys are filtering waste products from the blood. It involves collecting urine samples over a period of time to determine the amount of creatinine excreted. This test is used to assess kidney function and detect any abnormalities.

What is ldl cholesterole in laboratory test?

LDL cholesterol, also known as low-density lipoprotein cholesterol, is a type of cholesterol that is often measured in a laboratory test to assess a person's risk of cardiovascular disease. Elevated levels of LDL cholesterol can lead to a buildup of plaque in the arteries, increasing the risk of heart disease and stroke. Lowering LDL cholesterol levels through lifestyle changes or medication can help reduce this risk.

What are the possible blood types of a father if the offspring is A positive and the mother is O positive?

The first parent would be heterozygous for type A. The second parent would have to be heterozygous for type A, heterozygous for type B, or blood type O. The positive or negative is unable to be determined because positive is dominant so the first parent is positive then the baby will be positive with out a doubt so there is no way to find out the second parent's positive or negative.

What color tube do you use to draw gtt?

Gray top tube (GTT) is typically used for glucose tolerance test.

What does the red top tube contain plasma or serum?

The red top tube generally contains serum, which is the liquid portion of blood without clotting factors. Plasma, on the other hand, is obtained from blood collected in tubes with anticoagulants.

Can fastin diet pills give you a positive for anphetamines?

Yes, Fastin diet pills may contain ingredients that could potentially lead to a false positive result for amphetamines on a drug test. It is important to disclose any supplements or medications you are taking to the tester to avoid any confusion in the results.

Is urine dirty?

Urine is typically sterile when it leaves the body, but it can become contaminated with bacteria if not handled properly. It is considered a waste product that the body eliminates to get rid of excess water and chemicals. Additionally, urine can be a source of germs and should be disposed of properly to avoid contamination.

What principle is the coulter counter based on?

Coulter current method os used to determine the particle volume. The apparatus consists of two electrodes. Electrolyte solution containing particles are introduced into the apparatus. The particle is made to pass through the small hole present in between the two electrodes. When the particle pass through the orifice, resistance increases which is amplified.

What is the ratio of K2 EDTA per ml of blood?

The typical ratio of K2 EDTA to blood is around 1:9, meaning 1 part of K2 EDTA is used to collect 9 parts of blood. This anticoagulant helps preserve the blood sample by chelating calcium ions to prevent coagulation.

Can O positive blood group be interpreted as AB positive blood group?

No, O positive and AB positive blood types are different. O positive is type O blood with the Rh factor, while AB positive is type AB blood with the Rh factor. Blood type is determined by the presence or absence of antigens on the surface of red blood cells, which is not interchangeable between O and AB types.

What does mean AST on blood test lower than minimum?

An AST (aspartate aminotransferase) value lower than the minimum range in a blood test may indicate a potential deficiency or an underlying health condition impacting the liver or heart function. Further evaluation by a healthcare provider is recommended to determine the cause and appropriate treatment.

What cause blood clumping?

Blood clumping, or agglutination, occurs when blood cells clump together due to the presence of antibodies that react with antigens on the surface of the cells. This can happen during incompatible blood transfusions or in certain autoimmune diseases where the immune system mistakenly targets its own blood cells.

Can you have a cigarette 3 hours before a blood test?

nah man.

anyway you shouldn't be smoking.

Actually you can, if you are worried about it showing up in your bloodstream. Nicotine doesn't show up on a typical blood test, if at all. If you are worried about it, I think it may be time to quite. Good luck!

If the mother is A negative and the father is B positive what type of blood can the baby get?

It would all depend on the Dominant and Recessive blood type genes in the mother and father it is near improbable to tell unless you take a blood sample to test the blood type. == A rhesus negative mother and positive father can produce either a rhesus negative or positive child. A type A and type O parental combination will only produce either type A or type O children. So an A- mother and O+ father will normally produce offspring having the possible blood groups of A+ or A- or O+ or O-. See the link for a full explanation.

How long to fast before b12 test?

It is not typically necessary to fast before a B12 test. B12 levels are not affected by food intake, so you can usually have the test done at any time. However, it's always best to follow any specific instructions given by your healthcare provider or the lab conducting the test.

What color tube is used for cross and match?

A red-top tube is typically used for crossmatching blood. This tube contains no anticoagulant and is used for collecting blood samples for serology testing, including crossmatching.

What does a CPC blood test tell you?

A CPC (complete blood count) test provides information about the number and types of blood cells in your body, including red blood cells, white blood cells, and platelets. It can help diagnose conditions such as anemia, infections, and leukemia, and monitor the effects of certain medications or treatments on blood cell counts.

Bacterial smears are fixed before staining to?

Bacterial smears are fixed before staining to adhere the bacteria to the slide and kill the bacteria, which helps to prevent them from washing away during the staining process. Additionally, fixing the bacteria helps to preserve their cellular structures and prevent distortion during staining.

What color tube for total iron binding capacity?

The total iron binding capacity (TIBC) test typically uses a lavender or royal blue top tube, as it requires an EDTA anticoagulant to prevent clotting and preserve the sample for analysis.