Patient Benefits of Dried Blood Spot (DBS) Testing: At-Home Collection Made Simple

The rise of at-home health testing is transforming how patients access diagnostics. But not all home collection methods are equal.

While some clinical workflows rely on liquid sample collection (such as tubes of blood, urine, or saliva), a growing number of solutions are utilizing dried sampling technologies—including Dried Blood Spot (DBS), Dried Urine Spot (DUS), and Dried Saliva Spot (DSS).

What are dried sampling technologies? Dried Blood Spot (DBS) collection involves applying a small capillary blood sample to absorbent filter paper, where it dries and stabilizes for room-temperature transport to a lab—no refrigeration required. DUS and DSS follow the same principle for urine and saliva samples respectively.

From a patient perspective, the difference is significant.

Dried vs. Liquid Sample Collection: Which Is Right for At-Home Testing?

Liquid Sample Collection at Home

The traditional wet blood home collection kit process includes:

• Liquid samples collected in tubes or containers
• Larger volumes of biological material
• Samples are packaged and shipped under strict conditions

This method can be effective, and the preferred method for larger samples or specific biomarkers. It also unlocks the ability to use upper arm devices, which make it easier to collect blood.

Dried Sampling (DBS, DUS, DSS)

The dried sampling process is simple:

• A small amount of sample is applied to a card
• The sample dries and stabilizes
• The card is shipped easily to a lab

Dried sampling technologies are engineered specifically for decentralized healthcare. This approach is specifically designed for ease of use, safety, and accessibility.

Benefits of Dried Sampling

1. Simple Collection

Collecting liquid samples at home can be intimidating. Filling tubes correctly, avoiding contamination, and following strict instructions can create anxiety.

Dried sampling removes these challenges:

• No precise volume measurements required
• Easy, guided collection process
• Reduced risk of user error

For patients, this translates into confidence and peace of mind.

2. Minimal Handling of Biological Fluids

Handling liquid blood, urine, or saliva can feel uncomfortable for many users.

With DBS, DUS, and DSS:

• The sample is quickly absorbed into the card
• There is no need to manage free-flowing liquids
• The process feels cleaner and more controlled

This is a major advantage for first-time users and at-home testing adoption.

3. No Leakage, No Mess

One of the most common concerns with liquid sample kits is leakage during transport.

Dried samples eliminate this risk:

• No liquid = no spills
• No special sealing concerns
• No damage to packaging during shipping

Patients can send their samples with greater confidence and less hassle.

4. Cost Effective Shipping

Liquid samples need to be processed quickly unless they are kept refrigerated or frozen. They often require refrigeration, stabilizing agents, and fast shipping to avoid degradation. This can create pressure on patients to act quickly and follow complex instructions.

In contrast, dried samples:

• Are stable at room temperature
• Maintain integrity over time
• Can be shipped using standard mail

This flexibility is one of the biggest drivers of patient satisfaction and compliance.

5. Safety Considerations

From a safety standpoint, dried sampling offers clear benefits.

Compared to liquid samples:

• Lower biohazard risk once dried
• Reduced exposure during handling
• Safer for household environments

This is particularly important for families, elderly patients, and non-clinical settings.

Why Dried Sampling Is the Future of At-Home Diagnostics

As demand for remote health testing, telehealth integration, and self-collection kits continues to grow, dried sampling is becoming a popular solution.

For patients, it removes friction. For providers, it enables scale. For laboratories, it ensures consistency.

Ash works with each client to understand their program goals, budget, and population to design a testing program that will yield the best results and patient experience. Ash's partner Ahlstrom and EBF provide high-performance sample cards for health plans and providers that need to offer convenient, consistent, and scalable testing programs.

Contact Ash to learn how dried sampling can be integrated into your at-home testing program.