How Nobuto Strips Enable Field Sampling in Remote Environments

Collecting and transporting biological samples in the field can be challenging. Traditional methods often require cold storage, centrifugation, and liquid handling; tools not always available in remote or harsh environments. Nobuto blood filter strips offer a simple, portable, and reliable solution for collecting, drying, and transporting blood or serum samples without a cold chain [1].

What Makes Nobuto Strips Ideal for the Field

  • Compact and Consistent: Each strip absorbs about 0.1 mL of blood, and the lightweight cellulose design allows quick saturation and drying without specialized tools [2].
  • No Refrigeration Needed: Once dried, samples remain stable for weeks to months when stored with desiccant, preserving antibodies and DNA for later testing [3].
  • Low-Cost, Simple Shipping: Dried strips can be mailed in sealed envelopes without vials, dry ice, or biohazard shipping fees, reducing logistics costs for large or remote studies [1]. 
  • esistant to Temperature Swings: Nobuto strips tolerate fluctuating temperatures and humidity better than liquid samples, maintaining sample integrity during field transport [3].

Expanding Research Reach

The simplicity of Nobuto strips allows field researchers, wildlife agencies, and even local collaborators such as hunters or park rangers to collect samples during their regular fieldwork. This approach expands geographic coverage and supports large-scale wildlife disease surveillance programs, particularly for pathogens such as avian influenza, West Nile virus, and chronic wasting disease [3].

Limitations to Consider

  • While convenient, Nobuto strips have some limitations: 
  • Antibody degradation may occur under prolonged heat or humidity [3].
  • Incomplete saturation or inconsistent elution can introduce variability.
  • Dilution during elution may require assay calibration to maintain quantitative accuracy [2].

To minimize these effects, samples should be fully dried, sealed with desiccant, and stored away from direct heat or humidity until processing. 
Nobuto blood filter strips bridge the gap between field sampling and laboratory analysis. Their portability and temperature stability make them essential tools for wildlife health monitoring, ecological research, and global disease surveillance.

References 
Sterlitech. Nobuto Filter Strips for Studying Wild Animal Populations. https://www.sterlitech.com/blog/post/nobuto-filter-strips-for-studying-wild-animal-populations 
Sterlitech. Best Practices for Using Nobuto Strips in the Field. https://www.sterlitech.com/blog/post/best-practices-for-using-nobuto-strips-in-the-field 
Kutz S. et al. (2014). Blood Collected on Filter Paper for Wildlife Serology: Evaluating Storage and Temperature Challenges of Field Collections. Journal of Wildlife Diseases, 50(2): 308–321. https://meridian.allenpress.com/jwd/article/50/2/308/123177