A recent LabCorp study compared five capillary blood collection methods, including RedDrop One, Tasso+, Comfort Draw, the YourBio TAP device, and a traditional fingerstick. The poster evaluated user experience, sample volume, flow rate, clinical accuracy, and hemolysis performance to help healthcare providers and developers understand how these devices perform across real world testing conditions.

The results reinforce that RedDrop One provides high sample quality, strong volume output, and low overall pain, making it a strong option for remote diagnostics and decentralized clinical trials.

Source: LabCorp ADLM Device Comparison Poster

1. Strong Sample Volume and Flow Rate Performance

The LabCorp study evaluated whether devices could collect up to 600 µL of blood within a 5 minute window. RedDrop One demonstrated strong performance, delivering reliable sample volume and consistent flow rates across subjects.

On the poster charts, RedDrop One achieves a high total blood volume and serum volume, comparable to or better than other arm based devices such as Tasso+, Comfort Draw, and the YourBio TAP device.

Why this matters:
High volume collection supports multi analyte tests, reflex testing, and automated lab workflows. RedDrop is designed for partners who need consistent volume output without relying on complex user instructions.

2. Low Pain Scores Across Upper Arm Devices

LabCorp reported that all upper arm capillary devices produced very low pain ratings, ranging from 0.5 to 1.8 on a 0 to 10 scale

RedDrop One appears slightly higher than some arm based devices due to the brief activation click, its pain score remains far below fingerstick pain levels and within the low range that defines the entire upper arm category.

Key data points from the poster:

• Upper arm devices: 0.5 to 1.8

• Venipuncture: 1.5

• Fingerstick: 2.5

Why this matters:
RedDrop still delivers a low pain experience that is significantly more comfortable than fingerstick and preferred by the majority of participants.

3. Upper Arm Devices Were Preferred 71.8 Percent of the Time

The LabCorp poster reports that users preferred upper arm devices 71.8 percent of the time, compared to 28.2 percent for venipuncture and 0 percent for fingerstick.

RedDrop falls squarely within this group of preferred devices, benefiting from the shift toward arm based capillary sampling.

Why this matters:
User preference directly influences compliance, repeat testing, and long term engagement in telehealth programs and decentralized trials.

4. Acceptable Hemolysis Levels and High Sample Quality

Hemolysis indices for all upper arm devices, including RedDrop One, ranged from 6.9 to 20.8, which LabCorp noted were acceptable for most assays. Fingerstick produced higher hemolysis at 17.8, while venous samples were lowest at 5.9.

RedDrop One maintains sample integrity while delivering far better user experience than fingerstick.

Why this matters:
Low hemolysis supports higher accuracy, better instrument performance, and fewer repeat collections.

5. Strong Clinical Accuracy Comparable to Venous Samples

LabCorp measured concordance correlation coefficients (CCC) to evaluate agreement between capillary samples and venous reference results across multiple analytes. RedDrop One demonstrated CCC values consistent with other upper arm devices and aligned with the expected performance for capillary collections.

Why this matters:
Labs and clinical partners require capillary devices that deliver results close to venous draws. RedDrop One meets the accuracy expectations needed for routine chemistry panels and wellness testing.

Why RedDrop Stands Out in This Comparison

Even in a competitive landscape among arm based capillary devices, the LabCorp study highlights several strengths for RedDrop One:

• High total blood volume that supports more test types

• Strong flow rate performance

• Low pain experience within the reported upper arm range

• High subject preference as part of the arm based device category

• Acceptable hemolysis performance

• Reliable concordance with venous reference values

RedDrop is purpose built for partners who need a device that is reliable, scalable, and ready for modern diagnostic workflows.