Collection tubes for blood tests

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Red Top

Additive: None

Mode of action: Blood clots, and the serum is separated by centrifugation

Uses: Chemistries, Immunology and Serology, Blood Bank (Crossmatch)

 Gold Top

Additive: None

Mode of action: Serum separator tube (SST) contains a gel at the bottom to separate blood from serum on centrifugation

Uses: Chemistries, Immunology and Serology

 Light Green Top

Additive: Plasma Separating Tube (PST) with Lithium heparin

Mode of action: Anticoagulates with lithium heparin; Plasma is separated with PST gel at the bottom of the tube

Uses: Chemistries

Purple Top

Additive: EDTA

Mode of action: Forms calcium salts to remove calcium

Uses: Hematology (CBC) and Blood Bank (Crossmatch); requires full draw – invert 8 times to prevent clotting and platelet clumping

Light Blue Top

Additive: Sodium citrate

Mode of action: Forms calcium salts to remove calcium

Uses: Coagulation tests (protime and prothrombin time), full draw required

 Green Top

Additive: Sodium heparin or lithium heparin

Mode of action: Inactivates thrombin and thromboplastin

Uses: For lithium level, use sodium heparin for ammonia level, use sodium or lithium heparin

 Dark Blue Top

Additive: EDTA-

Mode of action: Tube is designed to contain no contaminating metals

Uses: Trace element testing (zinc, copper, lead, mercury) and toxicology

Light Gray Top

Additive: Sodium fluoride and potassium oxalate

Mode of action: Antiglycolytic agent preserves glucose up to 5 days

Uses: Glucoses, requires full draw (may cause hemolysis if short draw)

Yellow Top

Additive: ACD (acid-citrate-dextrose)

Mode of action: Complement inactivation

Uses: HLA tissue typing, paternity testing, DNA studies

Yellow – Black Top

Additive: Broth mixture

Mode of action: Preserves viability of microorganisms

Uses: Microbiology – aerobes, anaerobes, fungi

Black Top

Additive: Sodium citrate (buffered)

Mode of action: Forms calcium salts to remove calcium

Uses: Westergren Sedimentation Rate; requires full draw

Orange Top

Additive: Thrombin

Mode of action: Quickly clots blood

Uses: STAT serum chemistries

Light Brown Top

Additive: Sodium heparin

Mode of action: Inactivates thrombin and thromboplastin; contains virtually no lead

Uses: Serum lead determination

Pink Top

Additive: Potassium EDTA

Mode of action: Forms calcium salts

Uses: Immunohematology

White Top

Additive: Potassium EDTA

Mode of action: Forms calcium salts

Uses: Molecular/PCR and bDNA testing

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One thought on “Collection tubes for blood tests

    Mono said:
    August 5, 2014 at 11:49 am

    Good job

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