bloodspot card desiccation
The controlled drying process of newborn screening specimens on filter paper cards to ensure sample integrity before analysis.
Full Definition
Bloodspot card desiccation refers to the standardized drying process that newborn screening specimens undergo after collection on filter paper cards. This process typically takes 2-4 hours at room temperature in a horizontal position, protected from direct heat, humidity, and contamination. Proper desiccation is critical for maintaining analyte stability, preventing bacterial growth, and ensuring accurate test results. The degree of desiccation affects analyte extraction efficiency during laboratory processing and can impact screening outcomes if not performed according to protocol.
Usage
Usage note: Distinguish from general storage procedures; specifically refers to the initial drying phase post-collection.
In Context
- "The specimen was rejected due to improper bloodspot card desiccation, which resulted in sample degradation." — Laboratory rejection report
- "Training emphasized the importance of allowing adequate bloodspot card desiccation time before packaging specimens for transport." — Collection training manual