Plain Clot-Activator Tube (Serum Tube): RED Cap
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Nidovac™ EDTA (Ethylenediaminetetraacetic Acid) Purple or Lavender Cap
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Nidovac™ Na-Citrate (Buffered Sodium Citrate tube) Blue Cap
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Nidovac™ Heparin Tube (Li / Na – Heparin) Green Cap
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Nidovac™ Na-Fluoride Tube (Na-F + EDTA) Grey Cap
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