https://www.phlebotomyusa.com/blog/phlebotomy/which-color-tube-for-what-test/
Gray Top Tube. Designed specifically for glucose and lactate testing, the gray top tube contains potassium oxalate/sodium fluoride. These additives keep glucose levels stable until they can be analyzed, useful for tests like: Fasting Blood Sugar (FBS) Glucose Tolerance Test (GTT) Lactic Acid Measurement.

https://laboratoryinfo.com/common-blood-collection-tubes-their-additives-and-laboratory-uses/
Grey. 7. Royal Blue. 8. Black. Most blood collection tubes contain an additive that either accelerates clotting of the blood (clot activator) or prevents the blood from clotting (anticoagulant). The list below lists the most commonly used blood collection tubes, their additives and uses in laboratory: 1. Red.

https://www.labcorp.com/resource/blood-specimens-chemistry-and-hematology
Gray-top tube: Contains sodium fluoride (a preservative) and potassium oxalate (an anticoagulant). Use: Sodium fluoride whole blood or plasma. Send plasma in a plastic transport tube labeled "Plasma, Sodium Fluoride." Send whole blood in a gray-top tube. Blue-top tube (also light blue-top tube): Contains sodium citrate. Be sure to use only

https://phlebotomyu.com/what-color-tubes-are-used-for-which-tests-in-phlebotomy/
Sodium fluoride. Na2 EDTA. Labs typically use gray lids for glycolic inhibition of draws. Gray tops are common when phlebotomists expect there to be a delay in glucose level test results. Gray tubes are used to test blood levels for various compounds. These include: Blood alcohol levels. Glucose levels.

https://www.needle.tube/blog/guide-for-blood-draw-tube-colors
Lavender or purple top tubes are commonly used for complete blood count (CBC) tests and blood cell identification. The tube contains the anticoagulant EDTA (ethylenediaminetetraacetic acid), which prevents blood clotting by binding calcium ions. It is essential to mix the blood with the EDTA immediately after collection to ensure accurate test

https://microbeonline.com/blood-collection-tubes/
Gray top tubes can be used when checking Glucose levels only. These tubes preserve glucose and are helpful when drawing blood samples a long distance from the hospital. ... CBC (Complete blood count)/PLT Count, H&H (hemoglobin and hematocrit), SED Rate (ESR- eosinophil sedimentation rate), BNP (B-type natriuretic peptide) test, HgbA1C

https://wetrainphlebotomists.com/understanding-updated-phlebotomy-tube-color-chart-and-test-associations/
Gray-top samples remain stable for up to 8 hours at room temperature when measuring lactic acid levels, and their shelf life extends up to 24 hours. This makes them an excellent choice for quickly evaluating blood sugar levels and obtaining accurate results. ... For CBC tests, lavender tubes are required. While ALT (GPT), Amylase, and Hgb/Hct

https://www.phlebotomynow.co/understanding-phlebotomy-tube-colors/
The type of tube used depends on the specific test being performed. Here's a breakdown of the most common phlebotomy tube colors and their uses: Gray top. glucose, blood alcohol levels. Lavender/Purple top. CBC, differential white blood cell count. Green top. chemistry panels, blood gas analysis. Red top.

https://www.ephlebotomytraining.com/phlebotomy-tubes-explained/
Gray Top Tube. Gray-colored stoppers indicate that the tubes can contain potassium oxalate and sodium fluoride, sodium fluoride, and sodium fluoride/Na2 EDTA. These are often used for laboratory procedures where glycolytic inhibition of specimen is needed. Although red top tube can be used for a similar procedure, gray top tubes are preferred

https://clevelandcliniclabs.com/laboratory-resources/specimen-collection-transport/collection/blood-collection-tubes/
Blood collection tubes are part of the Evacuated Tube System (ETS) for collecting blood specimens. All tubes contain a premeasured amount of vacuum. When the multiple sample needle system is used, blood is pulled directly from the patient's vein into the tube. When the vacuum has been expended, the blood will stop flowing.

https://www.pathlabs.org/media/6115/tube-guide-23044-specimen-collection-tube-guide_v7_ada.pdf
is for the CBC and individual components of the CBC. The larger 6 mL tube is used for blood bank procedures. Red top tube. This tube has no anticoagulant and is used for many chemistry tests, drug levels, ... Grey top tube. Potassium Oxalate. This tube is used primarily for glucose tolerance testing. Yellow top tube. ACD (Sol. A or Sol. B)

https://www.ncbi.nlm.nih.gov/books/NBK555991/
Laboratory tube collection is a process applied when withdrawing blood samples from patients before they get tested in the laboratory. It follows the principle, which is most commonly known as the "order of draw." Different tests and biochemical assays require varying types of sample collection tubes. The reason why tubes are color-coded is for practical and easy identification.

https://www.needle.tube/blog/using-blood-collection-tubes-for-specific-tests
To perform a CBC, a lavender-top tube containing EDTA is used to prevent blood clotting and preserve the cellular components for accurate analysis. ... However, for fasting glucose tests, a gray-top tube containing sodium fluoride/potassium oxalate is used to prevent glycolysis and preserve the glucose levels in the sample.

https://www.needle.tube/blog/understanding-blood-tube-top-colors
Gray: Gray-stoppered tubes contain anticoagulants and additives such as fluoride and oxalate. These tubes are used for glucose and alcohol testing. Less common blood tube top colors. In addition to the standard colors mentioned above, there are a few less common blood tube top colors that are used for specific types of tests:

http://mds-usa.com/collection.html
Complete Blood Count (CBC): EDTA tubes (purple top): Purple top tubes should be 50-60% full. Do not overfill tubes. Gently mix specimen by inverting 5-10 times and place it on a rocker for up to 30 minutes, then refrigerate at 2-8°C. When a differential is required as part of a CBC, slides must be prepared within 12 hours of blood collection.

https://paramedicsworld.com/hematology-practicals/color-codes-vacutainer-tubes-uses/medical-paramedical-studynotes
Here is the list of Color codes of the tube, the Additives present in them and their common uses -. 1.) 2.) Prothrombin time (PT), Activated Partial Thromboplastin Time (APTT), Fibrinogen thrombin time and other blood Coagulation tests. 3.)

https://infusioninstitute.com/courses/phlebotomy-and-blood-specimen-collection/lessons/chapter/
6 th draw: Lavender-Top Tube ... EDTA Tube (Lavender) CBC . 6. Fluoride Tube (Grey) Previous Chapter. Back to Course. Next Chapter. Contact Information. Infusion Therapy Institute 960 Rand Road, Suite 224 Des Plaines, IL 60016 (847) 201-2290. info@infusioninstitute.com. In-Person Training Programs.

https://www.bd.com/en-us/products-and-solutions/products/product-families/bd-vacutainer-blood-collection-tubes
BD Vacutainer plastic tubes. BD Vacutainer plastic tubes offer a safe method of blood collection and reduce the potential for tube breakage and specimen spillage, thereby reducing the potential for exposure to bloodborne pathogens. BD is the inventor of BD Vacutainer® blood collection tubes as well as the worldwide leader in blood tubes.

https://phlebotomygeeks.yolasite.com/resources/BLOOD%20COLLECTION%20TUBES.pdf
Blood Collection tubes. Serum Separator Tube (SST): This grey and red speckled tube ("tiger top") is used primarily for Chemistry and Viral antibody testing. No anticoagulant is contained in the tube. Red Top Tube (Plain Non-Barrier): This tube is used for certain Blood Bank testing which requires a patient's serum, primarily RPR testing.

https://www.geisingermedicallabs.com/catalog/details.cfm?tid=116
CBC WITH WBC DIFFERENTIAL. SPECIMEN COLLECTION. Whole blood. 3 mL lavender-top (K2 EDTA) tube MUST be properly filled to at least 1.5 mL (half the fill volume of the tube). Lavender-top (K2 EDTA) microcollection tube MUST be properly filled to at least 250 uL (half the fill volume of the tube). SPECIMEN PROCESSING. Do NOT centrifuge.

https://www.labcorp.com/tests/004770/lactic-acid-plasma
Keep gray-top tube on ice. Draw blood in gray-top tube. Mix well by gentle inversion at least six times. Return to ice bath to cool. Avoid hand-clenching and, if possible, avoid use of a tourniquet. A tourniquet with patient clenching and unclenching hand will lead to high potassium and lactic acid buildup from the hand muscles, and pH will

https://www.needle.tube/tube-colors-and-blood-tests
Green Top Tube: Additive: Heparin (anticoagulant) Common Tests: Plasma tests, ammonia levels, STAT electrolytes (with lithium heparin) Gray Top Tube: Additive: Sodium fluoride (for glucose) and potassium oxalate (anticoagulant) Common Tests: Glucose, lactate, blood alcohol levels. Dark Blue Top Tube: Additive: Buffered sodium citrate.

https://quizlet.com/515701225/phlebotomy-tubes-flash-cards/
Lavender, Blue, Green, Gray Of the answer options provided, the best answer would accommodate testing accordingly: Complete Blood Count (CBC) = lavender top tube (EDTA) Prothrombin Time (PT)/INR = light blue top tube (sodium citrate) Basic Metabolic Panel (BMP) = green top tube (heparin); since the centrifuge is not functional and there is a

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