Product Specification

Clinical-Grade Cell-Free DNA Vacuum Blood Tube

1. Product Description

2. Application Scope

• Clinical Settings: Used in hospitals, diagnostic centers, and research institutions for collecting venous blood samples dedicated to cfDNA analysis, including cancer early detection (liquid biopsy), non-invasive prenatal testing (NIPT), and microbial cfDNA-based infectious disease diagnosis.
• Scenarios Requiring Flexibility: Ideal for environments where cold storage or immediate processing is challenging, such as remote clinics, mobile testing units, or regions with limited refrigeration infrastructure.
• Research & Development: Applicable in translational research and clinical trials focused on cfDNA biomarkers, enabling reliable sample collection for genomic studies and diagnostic assay validation.

3. Key Features

• Clinical-Grade Reliability: Manufactured and validated to meet clinical laboratory quality standards, ensuring consistent performance in diagnostic-grade cfDNA testing.
• Room-Temperature Stability: Maintains cfDNA integrity for extended periods (e.g., 7–14 days) at ambient temperatures, reducing logistical barriers and sample degradation risks.
• High cfDNA Preservation: Prevents cfDNA fragmentation, genomic DNA leakage, and microbial contamination, ensuring the purity and usability of samples for downstream molecular assays (e.g., PCR, next-generation sequencing).
• Standard Vacuum Design: Facilitates accurate, standardized blood collection, compatible with routine phlebotomy practices and clinical laboratory instrumentation.

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• 2. Specification

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  Parameter	Description/Options
  Tube Cap Color	Red, Lavender (Purple), Green, Gray, Blue, Yellow, Black, etc.
  Additive Type	None (Clot activator), EDTA, Heparin, Sodium Citrate, Sodium Fluoride, etc.
  Clinical Use	Serum separation, Hematology, Coagulation, Chemistry, Glucose, Blood Bank, etc.
  Nominal Volume	2ml, 3ml, 4ml, 5ml, 6ml, 7ml, 8ml, 10ml, etc.
  Draw Volume Range	±10% of nominal volume (e.g., 4.5-5.5ml for 5ml tube)
  Tube Diameter	13mm, 16mm (standard adult size)
  Tube Length	75mm, 100mm, etc.
  Material	PET plastic, Glass
  Sterilization	Gamma irradiation, EO Gas
  Expiry Period	Typically 12-36 months (from date of manufacture)
  Hemolysis Rate	≤0.1% (for most chemistry tubes)
  Clotting Time	30 mins (for serum tubes with clot activator)
  Centrifuge Speed	1300-2200g (tube material dependent)
  Safety Features	Hemogard™ closure, BD-PTS, Needle protection system
  Certifications	ISO 6710, CE Marked, FDA 510(k)

   

  Common Parameters by Tube Color (Example):

  Cap Color	Additive	Mixing	Inversion Count	Clinical Applications
  Red	None/Clot activator	5×	5-6	Serum chemistry, Immunology
  Lavender	K2/K3 EDTA	8-10×	8-10	Hematology (CBC, Blood Smear)
  Green	Lithium Heparin	8-10×	8-10	Plasma chemistry, STAT tests
  Gray	NaF/K Oxalate	8-10×	8-10	Glucose tolerance, Alcohol tests
  Blue	Sodium Citrate	3-4×	3-4	Coagulation tests (PT, APTT)

Clinical Performance Metrics: