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Venipuncture is the collection of blood from a vein, usually for laboratory testing.
Alternative NamesBlood-draw; Phlebotomy
How the test is performedBlood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.
Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm.
Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.
In infants or young children, a sharp tool called a lancet may be used to puncture the skin and make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over the area if there is any bleeding.
How to prepare for the testHow you prepare depends on the specific blood test you are having done. Many tests do not require any special preparation. Other times, you may be told to avoid food or drinks or limit certain medications before the test.
How the test will feelWhen the needle is inserted to draw blood, you may feel moderate pain, or only a prick or stinging sensation. Afterward, there may be some throbbing.
Why the test is performedBlood is made up of two parts:
- Fluid (plasma or serum)
- Cells
Plasma contains various substances. Serum is the fluid part that remains after the blood is allowed to clot in a test tube. Specifically, serum is the fluid part of blood after a substance called fibrinogenhas been removed.
Cells in the blood include red blood cells, white blood cells, and platelets.
Blood helps move oxygen, nutrients, waste products, and other materials through the body. It helps control body temperature, fluid balance, and the body's acid-base balance.
Tests on blood or parts of blood may give your doctor important clues about your health.
Normal ValuesNormal results vary with the specific test.
What abnormal results meanAbnormal results vary with the specific test.
What the risks areVeins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:
- Excessive bleeding
- Fainting or feeling light-headed
- Hematoma (blood accumulating under the skin)
- Infection (a slight risk any time the skin is broken)
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoVenipuncture is the collection of blood from a vein, usually for laboratory testing.
Alternative NamesBlood-draw; Phlebotomy
How the test is performedBlood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.
Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm.
Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.
In infants or young children, a sharp tool called a lancet may be used to puncture the skin and make it bleed. The blood collects onto a slide or test strip. A bandage may be placed over the area if there is any bleeding.
How to prepare for the testHow you prepare depends on the specific blood test you are having done. Many tests do not require any special preparation. Other times, you may be told to avoid food or drinks or limit certain medications before the test.
How the test will feelWhen the needle is inserted to draw blood, you may feel moderate pain, or only a prick or stinging sensation. Afterward, there may be some throbbing.
Why the test is performedBlood is made up of two parts:
- Fluid (plasma or serum)
- Cells
Plasma contains various substances including glucose, electrolytes, proteins, and water. Serum is the fluid part that remains after the blood is allowed to clot in a test tube. Specifically, serum is the fluid part of blood after a substance called fibrinogen has been removed by clotting.
Cells in the blood include red blood cells, white blood cells, and platelets.
Blood helps move oxygen, nutrients, waste products, and other materials through the body. It helps control body temperature, fluid balance, and the body's acid-base balance.
Tests on blood or parts of blood may give your doctor important clues about your health.
Normal ValuesNormal results vary with the specific test.
What abnormal results meanAbnormal results vary with the specific test.
What the risks areVeins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:
- Excessive bleeding
- Fainting or feeling light-headed
- Hematoma (blood accumulating under the skin)
- Infection (a slight risk any time the skin is broken)
Review Date: 08/31/2011
A.D.A.M. Editorial Team: David Zieve, MD, MHA, and David R. Eltz. Previously reviewed by David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine (5/30/2011).
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What is the condition called if the venipuncture site is swollen?
management information system report
Why is venipuncture cleansing done?
To prevent, if possible, inserting microbes into the sterile body.
What are the risks for a high aspartate aminotransferas?
Hi, AST of my wife is 45. Is it normal? If not, Is there any risk? Thanks Robert
What is the medical term meaning removing blood from the body?
PHLEBOTOMY from the word phlebo- meaning vein and -tomy meaning incison, cutting, excision as in appendectomy when used to define drawing blood for the purpose of sending it for a lab work-up. or VENEPUNCTURE (also spelt venipuncture) self explanatory as is BLOODLETTING-more correct use when in the context of treatment for certain conditions (as for example an iron-overload condition called Hemochromatosis) where considerable quantities may need to be removed over a period of time.
Karyotyping?
DefinitionKaryotyping is a test to examine chromosomes in a sample of cells, which can help identify genetic problems as the cause of a disorder or disease. This test can:Count the number of chromosomesLook for structural changes in chromosomesAlternative NamesChromosome analysisHow the test is performedThe test can be performed on almost any tissue, including:Amniotic fluidBloodBone marrowTissue from the organ that develops during pregnancy to feed a growing baby (placenta)To test amniotic fluid, an amniocentesis is done.A bone marrow specimen requires a bone marrow biopsy.The sample is placed into a special dish and allowed to grow in the laboratory. Cells are later taken from the growing sample and stained. The laboratory specialist uses a microscope to examine the size, shape, and number of chromosomes in the cell sample. The stained sample is photographed to provide a karyotype, which shows the arrangement of the chromosomes.Certain abnormalities can be identified through the number or arrangement of the chromosomes. Chromosomes contain thousands of genes that are stored in DNA, the basic genetic material.How to prepare for the testThere is no special preparation needed.How the test will feelHow the test will feel depends on whether the sample procedure is having blood drawn (venipuncture), amniocentesis, or bone marrow biopsy.Why the test is performedThis test is usually done to evaluate a couple with a history of miscarriages, or to examine any child or baby who has unusual features or developmental delays that suggest a genetic abnormality.The bone marrow or blood test can be done to identify the Philadelphia chromosome, which is found in about 85% of people with chronic myelogenous leukemia (CML).The amniotic fluid test is done to check a developing fetus for chromosome abnormalities.Normal ValuesFemales: 44 autosomes and 2 sex chromosomes (XX), written as 46, XXMales: 44 autosomes and 2 sex chromosomes (XY), written as 46, XYWhat abnormal results meanAbnormal results may be due to a genetic syndrome or condition, such as:Down syndromeKlinefelter syndromePhiladelphia chromosomeTrisomy 18Turner syndromeThis list is not all-inclusive.Additional conditions under which the test may be performed:Ambiguous genitaliaChronic myelogenous leukemia (CML) or other leukemiasDevelopmental delaysMultiple birth defectsWhat the risks areThe risks are related to the procedure used to obtain the specimen.See:AmniocentesisBone marrow biopsyChorionic villus samplingVenipunctureIn some cases, an abnormality may occur as the cells as growing in the lab dish. Karyotype tests should be repeated to confirm that an abnormal chromosome problem is actually in the body of the patient.Special considerationsChemotherapy may cause chromosome breaks that affect normal karotyping results.See also: MosaicismYour doctor may also order other tests that go together with a karyotype:Telomere studies -- look at the ends of the chromosomesMicroarray -- looks at small changes in the chromosomesFluorescent in situ hybridisation (FISH) -- looks for small mistakes such as deletions in the chromosomes
What is meant by puncturing a venipuncture?
A venipuncture is a puncture in a vein. As when a person gives blood or has a blood test run.
How do you anchor a vein during venipuncture?
You use your thumb to keep the vein from "rolling" while doing a venipuncture.
What standard conditions must be observed during venipuncture?
See the Web Links to the left for more information about venipuncture.
What is a venipuncture?
Venipuncture is the medical term used when drawing blood. Basically, it means your vein has had a needle stuck into it for some purpose.
Why is hemostasis after a venipuncture?
it promotes vasoconstriction
Why is hemostasis important after a venipuncture?
it promotes vasoconstriction
The puncture of a vein for drawing blood?
phlebotomy or venipuncture
What vein is perferred in the h patteren for venipuncture?
cephalic
What is the cpt code for cutdown venipuncture?
Cutdown-36425
Is it true that The word venipuncture is a synonym for phlebotomy?
Yes
Why is hemostasis important after a venipuncture procedure?
it promotes vasoconstriction
Which vein is the preferred vein for venipuncture procedures?
arteries
