Best Practices for Using Nobuto Strips in the Field
Nobuto strips are an essential tool for researchers and veterinarians conducting fieldwork, offering a simple and effective method for collecting and preserving blood samples. These samples are typically collected from a wide range of animals, including wildlife species (such as birds, reptiles, and mammals), livestock (like cattle, sheep, and goats), and domestic animals (such as dogs and cats). The reasons for blood collection vary, ranging from disease surveillance and health assessments to monitoring environmental toxins and conducting genetic studies. To ensure the accuracy and reliability of your results, it’s essential to follow best practices when using Nobuto strips. Below are key guidelines to help you optimize your fieldwork and sample collection process.
- Preparation Before Fieldwork
• Pack Adequately: Before heading into the field, ensure you have all the necessary supplies. Along with Nobuto strips, pack gloves, antiseptic wipes, sample collection tools (like syringes or lancets), and - storage bags. Having a checklist can help ensure nothing is overlooked.
• Label Strips Ahead of Time: Pre-label your Nobuto strips with relevant information such as the sample ID, date, and location. This minimizes handling time in the field and reduces the risk of mislabeling.
• Practice Sterile Techniques: To avoid contamination, always handle the Nobuto strips with clean gloves and tools. Sterilize all equipment before use, and store the strips in a clean, dry environment until they are needed. - Proper Blood Collection
• Choose the Right Sample Site: Select a sample site that will yield sufficient blood with minimal stress to the animal. Common sites include the ear, tail, or leg, depending on the species. Ensure the site is clean before collecting the sample.
• Use the Correct Technique: Gently press the Nobuto strip against the blood drop to allow it to absorb without smearing. Ensure the strip fully absorbs the blood sample; an incomplete or inconsistent sample may affect lab results.
• Avoid Oversaturation: Do not oversaturate the strip with blood. Nobuto strips are designed to absorb a specific amount of blood (typically 75–100 µL). Over-saturation can lead to inaccurate results and complicate sample processing. - Sample Drying and Storage
• Air-Dry Thoroughly: After collection, allow the Nobuto strips to air-dry completely in a clean, dust-free environment. This typically takes a few hours, depending on environmental conditions. Ensure they are not exposed to direct sunlight or extreme temperatures during drying.
• Store in a Cool, Dry Place: Once dry, store the Nobuto strips in sealed, labeled plastic bags with desiccant packs to prevent moisture absorption. Keep the strips in a cool, dry place until they can be transported to the lab. If field conditions are humid, consider using a portable dry box for storage.
• Transport with Care: During transportation, protect the strips from physical damage, moisture, and extreme temperatures. Use a protective case or container to keep them secure. - Documentation and Data Management
• Maintain Detailed Records: Document each sample meticulously, including the sample ID, date, time, location, and any observations about the animal or conditions during collection. This data is crucial for later analysis.
• Digital Backup: Consider photographing each Nobuto strip next to its label as a backup. Digital records can help in case of mislabeling or loss of physical records.
• Cross-Reference with Field Notes: Regularly cross-reference your Nobuto strip labels with your field notes to ensure accuracy and completeness. This step is vital for maintaining the integrity of your data. - Post-Fieldwork Protocols
• Immediate Processing if Possible: If lab facilities are nearby, process the samples as soon as possible. The fresher the sample, the more reliable the results.
• Long-Term Storage Considerations: If immediate processing is not possible, ensure that the strips are stored in a way that prevents degradation. Long-term storage may require refrigeration or freezing, depending on the study’s needs.
• Review and Improve: After each field session, review your processes and identify areas for improvement. This can include refining your sample collection technique, improving your documentation practices, or upgrading your storage methods.
By adhering to these best practices, researchers and veterinarians can ensure the high quality and reliability of blood samples collected with Nobuto strips in the field. Proper preparation, collection, and storage are crucial to the success of any study or diagnostic process, making it essential to integrate these guidelines into your routine fieldwork protocols.
References:
1. “Optimization of DNA Extraction from Field-Collected Mammalian Whole Blood on Filter Paper for Trypanosoma cruzi (Chagas Disease) Detection” - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8398220/
2. “Evaluation of Nobuto Filter Paper Strips for the Detection of Avian Influenza Virus Antibody in Waterfowl” -
3. Images of Nobuto filter paper strips depicting an unused strip (top), an incorrectly saturated strip (middle), and a correctly saturated strip (bottom). - https://www.researchgate.net/figure/Images-of-Nobuto-filter-paper-strips-depicting-an-unused-strip-top-an-incorrectly_fig1_303327031
