High-Precision Finger Blood Collection Capillary Tube – 5 µL / 10 µL / 20 µL Lab Supplies for Micro-Volume Sampling

II. Product Advantages

1. High-Transparency Tube Body Enables Precise Observation of Blood Volume

The Finger Blood Collection Capillary Tube utilizes premium optical-grade materials to achieve exceptional clarity. This high transparency delivers clear visibility of capillary-drawn blood, enabling users to accurately judge sample fill levels without relying solely on instrumentation. Particularly in high-volume B2B clinical settings, this visual confirmation helps avoid sample mis-collection and minimizes downstream testing errors. Sharp contrast between blood and background facilitates rapid checks for hemolysis or clot formation. In large labs where throughput and error prevention are paramount, the Finger Blood Collection Capillary Tube helps maintain quality at scale.

2. High-Precision Inner Diameter Guarantees Sample Volume Consistency

Each Finger Blood Collection Capillary Tube is manufactured with stringent quality control to maintain tight tolerances on the inner diameter. This precision ensures that capillary action consistently draws the intended volume—whether it’s the 5 µL, 10 µL, or 20 µL variant—providing reliable, reproducible sampling. Consistent volumes are essential for quantitative assays, micro-sample panels, and regulatory compliance in clinical diagnostics. With uniform internal geometry across production batches, the Finger Blood Collection Capillary Tube supports standardized protocols and validates inter-laboratory comparability. The result: minimized variability in test results and reduced need for retesting.

3. Excellent Thermal Resistance for Centrifugation Compatibility

The Finger Blood Collection Capillary Tube is constructed to endure rigorous laboratory conditions, including rapid-temperature fluctuations. Its thermal resilience withstands refrigerated storage (2–8 °C), incubation (37 °C), and even elevated conditions up to 60 °C without warping or compromising structural integrity. More importantly, the robust material sustains high-speed centrifugation typically used to separate plasma or serum from capillary whole blood. The device resists fracture or deformation, protecting both operator safety and sample integrity. In B2B environments where labs process dozens—or hundreds—of Finger Blood Collection Capillary Tube samples per day, this reliability ensures uninterrupted workflows and minimizes tube-related failures.

III. Use Cases

Here are key applications where the Finger Blood Collection Capillary Tube offers significant value:

Point-of-Care Testing: The Finger Blood Collection Capillary Tube streamlines rapid diagnostics by providing micro-volume sampling that can be directly applied to point-of-care analyzers. Its compact size and transparent design enable efficient handling in field hospitals or mobile clinics.

Clinical Trial Sampling: For pharmaceutical R&D, the Finger Blood Collection Capillary Tube enables standardized micro-sampling across large participant cohorts, ensuring statistical validity and data consistency.

Neonatal & Pediatrics: In delicate populations, the Finger Blood Collection Capillary Tube supports minimally invasive sampling with very small volumes—reducing stress for infants while providing sufficient sample for key diagnostic panels.

Home Sample Collection Kits: Consumer-oriented health monitoring programs employ the Finger Blood Collection Capillary Tube in remote home-sampling kits, thanks to its intuitive visual fill and stable reliability during shipping and handling.

Veterinary Diagnostics: The Finger Blood Collection Capillary Tube adapts to small-animal blood sampling—such as in veterinary clinics—where micro-volumes are necessary and transparent sampling guides ensure efficient workflow.

Biobanks & Sample Archiving: The Finger Blood Collection Capillary Tube is well suited for biobanking small aliquots of blood, enabling long-term storage and downstream usage in genomic or biomarker research.

Low-Volume Assay Development: Research labs developing microfluidic or low-sample-volume immunoassays depend on the consistent performance of the Finger Blood Collection Capillary Tube for method validation.

Emerging Diagnostics : The Finger Blood Collection Capillary Tube can be used in novel diagnostic formats that require precise micro-volume blood samples for evolving analytical platforms.

High-Throughput Lab Automation: Integrated sample workflows use racks of Finger Blood Collection Capillary Tube inserted into robot-friendly holders, supporting scaled, automated processing.

Quality Control Sampling: QC teams rely on the Finger Blood Collection Capillary Tube to pull repeat micro-samples for periodic validation checks during batch processing procedures.

IV. FAQ 

Q1: What are the available volume sizes for the Tube?

A: The Finger Blood Collection Capillary Tube comes in 5 µL, 10 µL, and 20 µL nominal volumes, tailored to diverse micro-sampling requirements.

Q2: What material is the Tube made of?

A: The tube is made of high-grade borosilicate glass—or in select versions, a clear bioplastic—with excellent optical clarity and thermal resistance.

Q3: Can the Tube withstand centrifugation?

A: Yes, it is designed for high-speed centrifugation processes without cracking or deforming, ensuring sample safety and device robustness.

Q4: Is the Tube compatible with automation systems?

A: Indeed. Racked formats and consistent dimensions make the Finger Blood Collection Capillary Tube compatible with automated loading systems used in high-throughput laboratory environments.

Q5: How do I verify correct fill volume?

A: The ultra-transparent body allows technicians to visually confirm the blood fill level against the calibrated volume markings—ensuring accurate sample volume.