Terms in this set (11) Which specimen is more likely to be hemolyzed, an evacuated tube drawn specimen or a syring drawn specimen? why? A syringe drawn specimen because of the higher risk for trauma during the transfer of the specimen from syringe to tube and the delay before the blood is mixed with the anti-coagulant.

Which of the following can cause Hemolyzed samples?

• Hemolysis can be caused by:
• Shaking the tube too hard.
• Using a needle that is too small.
• Pulling back too hard on a syringe plunger.
• Pushing on a syringe plunger too hard when expelling blood into a collection device. ×

Which of the following test is most seriously affected by hemolysis?

Conclusion. We conclude that hemolysis affects plasma concentration of a whole range of biochemical parameters, whereas the most prominent effect of hemolysis is observed for AST, LD, potassium and total bilirubin.

What should all bags transporting specimens have marked clearly?

• The patient's full name (which includes their last name, first name, and middle initial).
• The second patient identifier can include either the birthdate of the patient or a unique patient number, ID, or code.

What are the sources of hemolysis during venipuncture?

Causes of hemolysis during venipuncture may include: extraction methods, materials used for venous access, needle size, arm position, vein selection, handling blood specimen, skills and abilities of those sampling biological materials, particularities of blood vessels in a patient and others.

Preventing Hemolysis in the Blood Samples You Draw

What is Hemolyzed blood sample?

Abstract. The term hemolysis designates the pathological process of breakdown of red blood cells in blood, which is typically accompanied by varying degrees of red tinge in serum or plasma once the whole blood specimen has been centrifuged.

Why is Hemolyzed sample not accepted?

Serum/plasma samples submitted for potassium measurement are quite frequently rejected for analysis because they show the telltale signal of hemolysis, i.e. a reddish discoloration due to the presence of hemoglobin. ...

What 5 pieces of information must be on every specimen collected?

• Patient name.
• Patient medical record number, with check digit.
• Patient location.
• Collection date and time.
• Specimen type and/or source.
• Test required (note any special handling required)
• Ordering physician.

What is the best thing to do with an unidentified specimen?

Unlabeled or unidentified specimens will NOT be processed until properly labeled by physician or their designee. The specimen must be accompanied by a Surgical Pathology Order. Completion of ALL essential information will optimize tissue interpretation and patient care.

How do you handle a specimen?

When handling specimens, universal safety precautions should always be employed. Appropriate protective clothing and personal protective items should be worn. No tissue, even fixed material, should ever be handled with bare hands. It must be kept in mind that noxious agents are present in the laboratory.

How does hemolyzed specimen affects the test result?

Certain lab tests can be affected and the reported results will be inaccurate. It falsely decreases values such as RBC's, HCT, and aPTT. It can also falsely elevate potassium, ammonia, magnesium, phosphorus, AST, ALT, LDH and PT.

What does hemolysis look like?

Red blood cells without (left and middle) and with (right) hemolysis. If as little as 0.5% of the red blood cells are hemolyzed, the released hemoglobin will cause the serum or plasma to appear pale red or cherry red in color.

How can you prevent hemolysis?

1. Use the correct needle size for blood collection (20-22 gauge).
2. Avoid using butterfly needles, unless specifically requested by patient.
3. Warm up the venipuncture site to increase blood flow.
4. Allow disinfectant on venipuncture site to dry completely.

How is hemolysis treated?

Treatments for hemolytic anemia include blood transfusions, medicines, plasmapheresis (PLAZ-meh-feh-RE-sis), surgery, blood and marrow stem cell transplants, and lifestyle changes. People who have mild hemolytic anemia may not need treatment, as long as the condition doesn't worsen.

What causes Icteric blood sample?

Icteric serum is caused by the presence of excess bilirubin in the blood stream as a result of increased production (pre-hepatic) or inappropriate excretion (hepatic and post-hepatic).

Is glucose affected by hemolysis?

Hemolysis may falsely increase the following analytes: AST, alanine transaminase (ALT), LDH, total bilirubin, glucose, calcium, phosphorus, total protein, albumin, magnesium, amylase, lipase, creatine kinase (CK), iron, hemoglobin, and mean corpuscular hemoglobin concentration (MCHC).

How long can a specimen sit in formalin?

12 hours is optimal. Be sure the tissue pieces are thin enough (ideally less than 2 mm) for the fixative to penetrate rapidly, and that the volume of fixative is at least 20x that of the tissue. Use buffered formalin with enough preservative to prevent formation of formalin pigment.

What are the consequences of not labeling specimens correctly?

Specimen labeling errors have long plagued the laboratory industry putting patients at risk of transfusion-related death, medication errors, misdiagnosis, and patient mismanagement. Many interventions have been implemented and deemed to be effective in reducing sample error rates.

What can cause contamination of a specimen?

Contamination may occur if blood tubes are not drawn in the correct order (tubes with additives drawn prior to serum tubes), if an anticoagulated sample is decanted into a different tube type, or if a syringe used to transfer sample between different tube types comes into contact with anticoagulant.

What are the types of specimen collection?

The types of biological samples accepted in most clinical laboratories are: serum samples, virology swab samples, biopsy and necropsy tissue, cerebrospinal fluid, whole blood for PCR, and urine samples. These are collected in specific containers for successful processing in the laboratory.

What procedures do you need to follow to ensure the specimens are properly processed?

• Avoid patient identification errors. ...
• Draw the tubes in the proper sequence. ...
• Use proper containers for collection. ...
• Mix all tubes ten times by gentle inversion immediately after collection.
• Do not decant specimens from one type of container into another.

What is the significance of properly Labelling collected specimen?

Accurately identifying patients and correctly labeling specimens are critical to ensure patient safety. If a specimen in not accurately identified, it can lead to delayed or wrong diagnoses, missed or incorrect treatments, blood transfusion errors, and more.

What happens when blood is Hemolyzed?

"Hemo" means blood, of course; "lysis" means to rupture or the destruction of cells. So hemolysis is literally the destruction of blood cells, specifically red blood cells. When red cells rupture, they spill their contents, mostly hemoglobin, into their surroundings.

What is hemolysis and its causes?

Hemolysis is the destruction of red blood cells. Hemolysis can occur due to different causes and leads to the release of hemoglobin into the bloodstream. Normal red blood cells (erythrocytes) have a lifespan of about 120 days. After they die they break down and are removed from the circulation by the spleen.

What is severe hemolysis?

Hemolytic anemia is a disorder in which red blood cells are destroyed faster than they can be made. The destruction of red blood cells is called hemolysis. Red blood cells carry oxygen to all parts of your body. If you have a lower than normal amount of red blood cells, you have anemia.