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HALO™ Technology

The Patented Bladeless Microneedle Array

Traditional blood drawing technology using standard needles and lancets brings pain and inconvenience to many patients and poses a significant deterrent to testing in some patient populations. 

The bladeless microneedle array of our HALO™ technology overcomes these barriers. With microneedles thinner than an eyelash, HALO™ technology enables our TAP® devices to deliver a virtually painless blood collection experience compared to fingerstick, venipuncture, and competitive products.

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How HALO™ Takes The Pain Out of Blood Collection

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Touch Activated, Spring Released

After cleaning the skin with an alcohol wipe, the device is placed against the upper arm. Pressing the plunger activates the spring, which releases the microneedles and expels air from the sealed device body simultaneously.

Virtually Painless, Shallow Pierce

The needles only pierce approximately 1mm deep, remaining above the dermis where nerve endings are located. This eliminates the major source of pain during blood draws.

Rapid Microneedle Retraction

Unlike traditional blood draws, the microneedles retract after about 3 milliseconds, drawn back by the spring. 

Leveraging Physics for a Gentle Blood Draw

When the plunger is released, a gentle vacuum forms to facilitate the blood draw from out of the capillaries and through the skin.

Our Results Speak for Themselves

Up to 900µL of Whole Capillary Blood

Our HALO™ Technology enables patients to collect up to 900µL of blood, accommodating a broad range of standard blood tests1

Up to 99% Collection Success Rate

Our devices are end-user preferred, virtually painless, and yield up to a 99% collection success rate2

200% Increase in Patient Retention/Completion Rates

Significantly higher completion rates in clinical trials when compared to fingerstick3

98% Would Repeat Self-Collection

When asked if they would repeat their self-collection experience with TAP® Micro, 98% of patient respondents responded “yes”4

High Venous Concordance

For broad-based tests, such as cholesterol, capillary blood samples collected in both assisted and self-collection settings have high concordance with venous blood5

Product Guides
Learn more about TAP® Micro and TAP® Micro Select Explore Product Guides
Product Videos
See how our TAP® devices leverage the HALO™ Technology Explore Product Videos

Latest Research and Highlights

Discover the latest studies and reports published on our devices and solutions

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  • July 1, 2024
    Feasibility, reliability and satisfaction of (automated) capillary carcinoembryonic antigen measurements for future home-based blood sampling: the prospective CASA-I study
    Colorectal Disease

    Feasibility of home-based capillary sampling of colorectal cancer marker CEA was demonstrated. TAP was found to be “the most reliable method and is preferred by patients over venipuncture and lancet sampling.” (Erasmus MC)

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  • April 11, 2024
    Evaluation of a hybrid telehealth care pathway for patients with axial spondyloarthritis including self-sampling at home: results of a longitudinal proof-of-concept mixed-methods study (TeleSpactive)
    Rheumatology International

    TAP was employed to demonstrate the feasibility, high patient acceptance, and overall potential of a scalable axSpA hybrid telehealth care pathway.

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  • February 19, 2024
    Placental transfer dynamics and durability of maternal COVID-19 vaccine-induced antibodies in infants

    TAP devices used to collect blood samples from 2-month-old and 12-month-old infants in Sars-CoV-2 infection risk study

    Read More
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  1. Citation: Internal data.
  2. Citation: This is a customer-reported statistic.
  3. Citation: This is a customer-reported statistic
  4. Citation: Internal data.
  5. Citation: Collier, B. B., Brandon, W. C., Chappell, M. R., Kovach, P. M. & Grant, R. P. Maximizing Microsampling: Measurement of Comprehensive Metabolic and Lipid Panels Using a Novel Capillary Blood Collection Device. J. Appl. Lab. Med. jfad066 (2023) doi:10.1093/jalm/jfad066.