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    AI Overview
    Vacuum Gray Plastic Cap Glucose Blood Collection Tube for ...
    A disposable gray-cap blood collection tube is specifically for glucose testing, containing sodium fluoride (an antiglycolytic agent to stop sugar breakdown) and potassium oxalate (an anticoagulant to prevent clotting), ensuring stable blood sugar levels for accurate tests like Fasting Blood Sugar (FBS) or Glucose Tolerance Tests (GTT). 
    Key Features 
    • Additives: Sodium Fluoride (preserves glucose) & Potassium Oxalate (prevents clotting).
    • Purpose: Blood Glucose Testing, Glucose Tolerance Tests (GTT), Lactate Testing, Blood Alcohol Levels.
    • Function: Inhibits enzymes that break down glucose and stops blood from clotting, keeping the sample stable.
    • Appearance: A vacuum-sealed tube with a distinct gray lid. 
    Why it's used 
    When blood is drawn, cells naturally consume glucose (glycolysis). The gray tube's additives stop this process, allowing labs to measure the actual glucose level in the blood accurately, even if the analysis isn't immediate. 
    • Laboratory Tube Collection - StatPearls - NCBI Bookshelf - NIH
      Aug 7, 2023 — The grey tubes contain potassium oxalate that binds to calcium, thus, inhibiting coagulation. Another substance, sodium...
      National Institutes of Health (.gov)
    • Glucose Tube, Gray Top Blood Sugar Tube - Hawach Scientific
      A gray top tube contains a specific type of anticoagulant fluoride oxalate, which helps preserve the blood sample and prevent it f...
      Hawach Scientific
    • Vacuum Blood Collection Tube (Glucose Tube), 13 x 75mm, 4ml ...
      Product Description. The 4mL Vacuum Blood Collection Glucose Tube with Sodium Fluoride is specifically designed for blood glucose ...
      eBay
    • Tube Colors and the Tests They Are Used For | Phlebotomy USA
      Mar 23, 2025 — The gray top tube contains potassium oxalate/sodium fluoride, specifically for glucose and lactate testing. These addi...
      Phlebotomy Training Specialists
    • Specimen Collection and Preparation - Mayo Clinic Laboratories
      Grey-Top Tube (Potassium Oxalate/Sodium Fluoride): This tube contains potassium oxalate as an anticoagulant and sodium fluoride as...
      Mayo Clinic Laboratories
    • The Significance of Gray Top Tubes in Healthcare Settings
      The gray color of the tube cap indicates its purpose for specific testing, primarily for glucose testing and blood alcohol level t...
      Needle.Tube
    • Fluoride Oxalate Tubes - Narang Medical
      Fluoride Oxalate Tubes (MOQ: 100,000 Pcs Assorted Size) ESR is a simple, non-specific screening test utilized for monitoring the p...
      Narang Medical
    • Preventing Glycolysis in Blood Samples: Importance of Tube Additives and Guidelines for Accurate Testing
      Glycolysis is the breakdown of glucose in blood samples by enzymes present in the red blood cells, which can lead to falsely low B...
      Needle.Tube
    • Laboratory Tube Collection - StatPearls - NCBI Bookshelf - NIH
      Aug 7, 2023 — The grey tubes contain potassium oxalate that binds to calcium, thus, inhibiting coagulation. Another substance, sodium...
      National Institutes of Health (.gov)
    • Glucose Tube, Gray Top Blood Sugar Tube - Hawach Scientific
      A gray top tube contains a specific type of anticoagulant fluoride oxalate, which helps preserve the blood sample and prevent it f...
      Hawach Scientific
    • Vacuum Blood Collection Tube (Glucose Tube), 13 x 75mm, 4ml ...
      Product Description. The 4mL Vacuum Blood Collection Glucose Tube with Sodium Fluoride is specifically designed for blood glucose ...
      eBay
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    glucose blood collection tubes - Shop - Greiner Bio-One


    Greiner Bio-One
    https://shop.gbo.com › ... › Glucose
    Greiner Bio-One
    https://shop.gbo.com › ... › Glucose
    Item: 454238. VACUETTE® TUBE 2 ml FX Sodium Fluoride / Potassium Oxalate 13x75 grey cap-white ring, non-ridged. Per sales unit 1 Carton(s). $237.74.Read more

    VACUETTE Glucose Blood Collection Tubes


    Medline
    https://www.medline.com › product › Z05-PF274832
    Medline
    https://www.medline.com › product › Z05-PF274832
    VACUETTE Blood Collection Tube, FX Sodium Fluoride/Potassium Oxalate, Non-Ridged, 13x75, Gray Cap with White Ring, 2 mL, 1200/CS. GRI454238Z. View Details.Read more
    Disposable glucose tube with gray cap from www.medline.com

    Glucose Tube, Gray Top Blood Sugar Tube - Hawach


    Hawach Scientific
    https://www.hawach.com › vacuum-blood-collection-tube
    Hawach Scientific
    https://www.hawach.com › vacuum-blood-collection-tube
    A gray top tube contains a specific type of anticoagulant fluoride oxalate, which helps preserve the blood sample and prevent it from clotting.
    Disposable glucose tube with gray cap from www.hawach.com

    grey cap glucose tube – Quality Supplier from China


    bloodcollectingtube.com
    https://www.bloodcollectingtube.com › buy-grey_cap_gl...
    bloodcollectingtube.com
    https://www.bloodcollectingtube.com › buy-grey_cap_gl...
    Grey cap cover made of PET or glass material, sodium fluoride + EDTA/sodium heparin/potassium oxalate single-use vacuum blood collection tube, for clinical ...Read more
    Disposable glucose tube with gray cap from www.bloodcollectingtube.com
    Missing: Disposable ‎gray

    Capillary Tube BD Microtainer Glucose Determination ...


    SupremeMed
    https://www.suprememed.com › ... › Tubes
    SupremeMed
    https://www.suprememed.com › ... › Tubes
    Color coded caps for accurate tube selectionCapillary Tube BD Microtainer Glucose Determination Tube Grey Cap; TUBE, GLUCOSE NGMBT (50/BX). Additional ...Read more

    Vacuum Blood Collection Tube (Glucose Tube), 13 x ...


    eBay
    https://www.ebay.com › ... › Test Tubes
    eBay
    https://www.ebay.com › ... › Test Tubes
    The gray top signifies that the tube contains Sodium Fluoride, which prevents glycolysis and preserves glucose levels in the sample.
    Disposable glucose tube with gray cap from www.ebay.com

    Disposable Grey Cap Glucose Blood Collection


    Rollmed
    https://www.rollmed.net › ... › Blood Collection Tube
    Rollmed
    https://www.rollmed.net › ... › Blood Collection Tube
    Disposable Grey Cap Glucose Blood Collection. Quick Details Place of Origin:Zhejiang, China Brand Name:globalroll Model Number:NLD9X0GP Size:13*75mm,13*100mm ...Read more
    People also ask
    What is a GREY top tube for glucose?
    Glucose Tube, Gray Top Blood Sugar Tube - Hawach
    A glucose tube, also known as a gray top tube or a blood sugar tube, is a specialized tube used in medical settings to collect blood samples for measuring glucose levels. Glucose tubes are commonly used in glucose testing, particularly for diagnosing and monitoring diabetes.

    Glucose Tube, Gray Top Blood Sugar Tube - Hawach Scientific


    Hawach Scientific
    https://www.hawach.com › vacuum-blood-collection-tube
    Hawach Scientific
    https://www.hawach.com › vacuum-blood-collection-tube
    What is a GREY top tube used for?
    An AI Overview is not available for this searchCan't generate an AI overview right now. Try again later.
    AI Overview
    Siny Medical Grey Top Tube Sodium Fluoride Glucose Tube for Blood Sample
    A grey top blood tube, containing Sodium Fluoride (a preservative) and Potassium Oxalate (an anticoagulant), is primarily used for tests measuring glucose and lactate levels, preventing the blood cells from consuming sugar (glycolysis) and keeping levels stable for accurate results, like in Fasting Blood Sugar (FBS), Glucose Tolerance Tests (GTT), and blood alcohol tests.
     
    Key Uses:
    • Glucose Testing: Stops glycolysis, making it ideal for fasting blood sugar, glucose tolerance tests, and post-meal glucose checks. 
    • Lactic Acid Tests: Preserves lactate levels for accurate measurement. 
    • Blood Alcohol Concentration (BAC): Used for ethanol analysis. 
    How it Works:
    • Sodium Fluoride: Acts as a glycolytic inhibitor, preventing red blood cells from breaking down glucose. 
    • Potassium Oxalate: Binds with calcium to stop the blood from clotting (anticoagulant). 
    When to Use It: 
    • When you need to check how your body processes sugar over time (GTT).
    • For routine blood sugar checks, especially in fasting patients.
    • For toxicology screenings like blood alcohol levels.
    • Blood bottles - Pulsenotes
      The grey top bottle is most commonly used to check serum glucose levels. The grey top bottle can be used to check for two main tes...
      Pulsenotes
    • Glucose Tube, Gray Top Blood Sugar Tube - Hawach Scientific
      Research and clinical studies: Glucose tubes are utilized in medical research and clinical studies that investigate glucose metabo...
      Hawach Scientific
    • Tube Colors and the Tests They Are Used For | Phlebotomy USA
      Mar 24, 2025 — Blood Typing. Crossmatching. Antibody Screening. Gray Top Tube. The gray top tube contains potassium oxalate/sodium fl...
      Phlebotomy Training Specialists
    • Blood Collection Tubes | Laboratory Test Guide
      Potassium Oxalate/Sodium Fluoride (Grey Top Tube) This tube contains Potassium Oxalate as an anticoagulant and Sodium Fluoride as ...
      UW Medicine Pathology
    • Blood Collection Tubes - Cleveland Clinic Laboratories
      Grey Sodium Fluoride & Potassium Oxalate Contains potassium oxalate and sodium fluoride, powder. Potassium oxalate binds with calc...
      Cleveland Clinic Laboratories
    • Blood Collection Tubes - WellSpan Lab Services
      Available in 13 x 100 with 4.5 mL volume draw. Sterile plastic tube. Invert 8-10 times to facilitate mixing and prevent coagulatio...
      wellspanlabs.org
    • Blood Collection Tubes - Lynn Peavey Company
      Blood collection tubes are available in two configurations: gray-topped and purple-topped. The tubes have expiration dates and do ...
      Lynn Peavey Company

    Related Links

      This is for informational purposes only. For medical advice or diagnosis, consult a professional. AI responses may include mistakes. Learn more
      Blood bottles - Pulsenotes
      The grey top bottle is most commonly used to check serum glucose levels. The grey top bottle can be used to check for two main tes...
      Pulsenotes
      Glucose Tube, Gray Top Blood Sugar Tube - Hawach Scientific
      Research and clinical studies: Glucose tubes are utilized in medical research and clinical studies that investigate glucose metabo...
      Hawach Scientific
      Tube Colors and the Tests They Are Used For | Phlebotomy USA
      Mar 24, 2025 — Blood Typing. Crossmatching. Antibody Screening. Gray Top Tube. The gray top tube contains potassium oxalate/sodium fl...
      Phlebotomy Training Specialists
      Blood Collection Tubes | Laboratory Test Guide
      Potassium Oxalate/Sodium Fluoride (Grey Top Tube) This tube contains Potassium Oxalate as an anticoagulant and Sodium Fluoride as ...
      UW Medicine Pathology
      Blood Collection Tubes - Cleveland Clinic Laboratories
      Grey Sodium Fluoride & Potassium Oxalate Contains potassium oxalate and sodium fluoride, powder. Potassium oxalate binds with calc...
      Cleveland Clinic Laboratories
      Blood Collection Tubes - WellSpan Lab Services
      Available in 13 x 100 with 4.5 mL volume draw. Sterile plastic tube. Invert 8-10 times to facilitate mixing and prevent coagulatio...
      wellspanlabs.org
      Blood Collection Tubes - Lynn Peavey Company
      Blood collection tubes are available in two configurations: gray-topped and purple-topped. The tubes have expiration dates and do ...
      Lynn Peavey Company

      Show more
      What does the gray blood tube test for?
      An AI Overview is not available for this searchCan't generate an AI overview right now. Try again later.
      AI Overview
      A gray-top blood tube is used for glucose (blood sugar) and lactate testing, containing sodium fluoride to stop cells from consuming sugar (glycolysis) and potassium oxalate as an anticoagulant, ensuring accurate measurements for diagnosing diabetes or monitoring metabolic issues.
       
      Key Components & Purpose:
      • Sodium Fluoride (Preservative): Prevents red blood cells from using up glucose, which would give a falsely low reading. 
      • Potassium Oxalate (Anticoagulant): Binds to calcium to stop blood from clotting. 
      Common Tests Performed:
      • Fasting Blood Sugar (FBS): Checks glucose levels after fasting. 
      • Glucose Tolerance Test (GTT): Monitors how the body processes sugar over time. 
      • Lactic Acid Levels: Measures lactate, important in assessing tissue oxygenation and certain metabolic conditions. 
      Why It's Used:
      This tube is crucial for tests where glucose stability is vital, preventing the sample from degrading before analysis, which is essential for accurate diabetes management and diagnosis. 
      • Glucose Tube, Gray Top Blood Sugar Tube - Hawach Scientific
        Description of Glucose Tube. A glucose tube, also known as a gray top tube or a blood sugar tube, is a specialized tube used in me...
        Hawach Scientific
      • Tube Colors and the Tests They Are Used For | Phlebotomy USA
        Mar 24, 2025 — Gray Top Tube. The gray top tube contains potassium oxalate/sodium fluoride, specifically for glucose and lactate test...
        Phlebotomy Training Specialists
      • Blood bottles - Pulsenotes
        The grey top bottle is most commonly used to check serum glucose levels. The grey top bottle can be used to check for two main tes...
        Pulsenotes
      • Laboratory Tube Collection - StatPearls - NCBI Bookshelf - NIH
        The grey tubes contain potassium oxalate that binds to calcium, thus, inhibiting coagulation. Another substance, sodium fluoride,
        National Institutes of Health (.gov)
      • Blood Collection Tubes | Laboratory Test Guide - UW Medicine Pathology
        Potassium Oxalate/Sodium Fluoride (Grey Top Tube) This tube contains Potassium Oxalate as an anticoagulant and Sodium Fluoride as ...
        UW Medicine Pathology
      • Understanding The Purpose Of Blood Test Tube Colors - Ampath
        Gray Top Tube – The Glucose Guardian. The gray top tube contains sodium fluoride and potassium oxalate, making it perfect for gluc...
        Ampath
      • Blood Collection Tubes: Common Types
        Jul 17, 2018 — however EDTA tubes have an advantage EDTA also inhibits calcium dependent enzymes resulting in a more stable sample th...
        YouTube · 
        AMBOSS: Medical Knowledge Distilled

      Related Links

        This is for informational purposes only. For medical advice or diagnosis, consult a professional. AI responses may include mistakes. Learn more
        Glucose Tube, Gray Top Blood Sugar Tube - Hawach Scientific
        Description of Glucose Tube. A glucose tube, also known as a gray top tube or a blood sugar tube, is a specialized tube used in me...
        Hawach Scientific
        Tube Colors and the Tests They Are Used For | Phlebotomy USA
        Mar 24, 2025 — Gray Top Tube. The gray top tube contains potassium oxalate/sodium fluoride, specifically for glucose and lactate test...
        Phlebotomy Training Specialists
        Blood bottles - Pulsenotes
        The grey top bottle is most commonly used to check serum glucose levels. The grey top bottle can be used to check for two main tes...
        Pulsenotes
        Laboratory Tube Collection - StatPearls - NCBI Bookshelf - NIH
        The grey tubes contain potassium oxalate that binds to calcium, thus, inhibiting coagulation. Another substance, sodium fluoride,
        National Institutes of Health (.gov)
        Blood Collection Tubes | Laboratory Test Guide - UW Medicine Pathology
        Potassium Oxalate/Sodium Fluoride (Grey Top Tube) This tube contains Potassium Oxalate as an anticoagulant and Sodium Fluoride as ...
        UW Medicine Pathology
        Understanding The Purpose Of Blood Test Tube Colors - Ampath
        Gray Top Tube – The Glucose Guardian. The gray top tube contains sodium fluoride and potassium oxalate, making it perfect for gluc...
        Ampath
        Blood Collection Tubes: Common Types
        Jul 17, 2018 — however EDTA tubes have an advantage EDTA also inhibits calcium dependent enzymes resulting in a more stable sample th...
        YouTube · 
        AMBOSS: Medical Knowledge Distilled

        Show more

        Ask anything in AI Mode

        Explain how glycolysis works
        Tell me more about sodium fluoride
        Describe potassium oxalate's role
        What additive is in the gray top tubes?
        An AI Overview is not available for this searchCan't generate an AI overview right now. Try again later.
        AI Overview
        Gray top blood tubes contain a combination of Sodium Fluoride (an antiglycolytic agent) and Potassium Oxalate (an anticoagulant), specifically to prevent blood cells from consuming glucose and to stop clotting, making them ideal for accurate glucose, lactate, and alcohol level testing. This dual additive ensures the sample's glucose content remains stable for analysis, unlike plain tubes where glucose levels drop over time.
         
        Key Additives & Their Roles:
        • Sodium Fluoride: Inhibits glycolysis (the breakdown of glucose by red blood cells). 
        • Potassium Oxalate: Binds with calcium ions to prevent the blood from clotting (acts as an anticoagulant). 
        Common Tests:
        • Glucose Tests: Fasting Blood Sugar (FBS), Glucose Tolerance Tests (GTT).
        • Lactic Acid & Pyruvate Levels .
        • Blood Alcohol Levels . 
        Why It's Used:
        Without these additives, glucose levels in a standard blood sample would decrease as cells metabolize it, leading to inaccurate results for diabetic monitoring or related tests. The gray top tube stabilizes the sample, preserving the actual glucose level present at the time of collection. 
        • Glucose Tube, Gray Top Blood Sugar Tube - Hawach Scientific
          Description of Glucose Tube. A glucose tube, also known as a gray top tube or a blood sugar tube, is a specialized tube used in me...
          Hawach Scientific
        • When should a gray top tube be used, and what tests are commonly ...
          Color: Gray. Additive: Sodium fluoride (antiglycolytic) and sometimes potassium oxalate (anticoagulant). Purpose: Sodium fluoride ...
          Needle.Tube
        • Laboratory Tube Collection - StatPearls - NCBI Bookshelf - NIH
          The grey tubes contain potassium oxalate that binds to calcium, thus, inhibiting coagulation. Another substance, sodium fluoride,
          National Institutes of Health (.gov)
        • Tube Colors and the Tests They Are Used For | Phlebotomy USA
          Mar 24, 2025 — The gray top tube contains potassium oxalate/sodium fluoride, specifically for glucose and lactate testing. These addi...
          Phlebotomy Training Specialists
        • Blood Collection Tubes - Cleveland Clinic Laboratories
          Grey Sodium Fluoride & Potassium Oxalate Contains potassium oxalate and sodium fluoride, powder. Potassium oxalate binds with calc...
          Cleveland Clinic Laboratories
        • The Typical Additive Found in Gray Top Blood Tubes in Phlebotomy ...
          Gray top blood tubes are used in phlebotomy to collect blood samples for glucose testing and other diagnostic purposes. These tube...
          Needle.Tube
        • The Importance of Gray Top Tubes with Potassium Oxalate in ...
          The Anticoagulant Additive: Potassium Oxalate The typical Anticoagulant additive found in a gray top tube used for blood collectio...
          Needle.Tube
        • The Role of Grey Top Tubes in Phlebotomy: Additives and Uses in ...
          The Role of Grey Top Tubes in Phlebotomy: Additives and Uses in Laboratory Testing * Grey top tubes are commonly used in phleboto...
          Needle.Tube

        Related Links

          AI responses may include mistakes. Learn more
          Glucose Tube, Gray Top Blood Sugar Tube - Hawach Scientific
          Description of Glucose Tube. A glucose tube, also known as a gray top tube or a blood sugar tube, is a specialized tube used in me...
          Hawach Scientific
          When should a gray top tube be used, and what tests are commonly ...
          Color: Gray. Additive: Sodium fluoride (antiglycolytic) and sometimes potassium oxalate (anticoagulant). Purpose: Sodium fluoride ...
          Needle.Tube
          Laboratory Tube Collection - StatPearls - NCBI Bookshelf - NIH
          The grey tubes contain potassium oxalate that binds to calcium, thus, inhibiting coagulation. Another substance, sodium fluoride,
          National Institutes of Health (.gov)
          Tube Colors and the Tests They Are Used For | Phlebotomy USA
          Mar 24, 2025 — The gray top tube contains potassium oxalate/sodium fluoride, specifically for glucose and lactate testing. These addi...
          Phlebotomy Training Specialists
          Blood Collection Tubes - Cleveland Clinic Laboratories
          Grey Sodium Fluoride & Potassium Oxalate Contains potassium oxalate and sodium fluoride, powder. Potassium oxalate binds with calc...
          Cleveland Clinic Laboratories
          The Typical Additive Found in Gray Top Blood Tubes in Phlebotomy ...
          Gray top blood tubes are used in phlebotomy to collect blood samples for glucose testing and other diagnostic purposes. These tube...
          Needle.Tube
          The Importance of Gray Top Tubes with Potassium Oxalate in ...
          The Anticoagulant Additive: Potassium Oxalate The typical Anticoagulant additive found in a gray top tube used for blood collectio...
          Needle.Tube
          The Role of Grey Top Tubes in Phlebotomy: Additives and Uses in ...
          The Role of Grey Top Tubes in Phlebotomy: Additives and Uses in Laboratory Testing * Grey top tubes are commonly used in phleboto...
          Needle.Tube

          Show more
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          Grey Screw Cap Paediatric Blood Collection Tube - PAED76


          International Scientific Supplies Ltd
          https://intscientific.com › product › grey-screw-cap-pae...
          International Scientific Supplies Ltd
          https://intscientific.com › product › grey-screw-cap-pae...
          1.3ml fluoride/potassium EDTA paediatric blood collection tubes - PAED76 - Secure grey screw caps. Pack of 1000 for £192.44.
          Disposable glucose tube with gray cap from intscientific.com

          Sterile Vacuette Grey Cap Glucose Vacuum Blood ...


          CNWTC
          https://www.cnwtc.com › showroom › sterile-vacuette-gr...
          CNWTC
          https://www.cnwtc.com › showroom › sterile-vacuette-gr...
          This special compound additive allows long-term refrigeration of blood glucose samples. Relative Product: 1, SST tube, with additive of Gel & clot activator, ...Read more

          1 results found for "disposable glucose tube with gray cap"


          hicomedical.com
          https://www.hicomedical.com › disposable-glucose-tube...
          hicomedical.com
          https://www.hicomedical.com › disposable-glucose-tube...
          China Disposable Vacuum Blood Sugar Test Glucose Tube used for blood specimen collection and storage in clinical laboratory. Hot Tags : Hot sale glucose tube ...Read more

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