Related Experiment Video
Updated: Jun 17, 2026

How to Stabilize Protein: Stability Screens for Thermal Shift Assays and Nano Differential Scanning Fluorimetry in the Virus-X Project
Published on: February 11, 2019
[Stability of the tetramine in blood samples under different temperatures]
1Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, Shanghai, China.
Objective:
To study the stability of tetramine in blood samples under different environment temperatures.
Methods:
The tetramine samples in 0.5 microg/mL concentration were stored in the environment temperature at 45 degrees C, 25 degrees C and 4 degrees C. The tetramine concentration were measured by GC-MS in 1, 3, 12, 18 and 39 days, respectively. And then the results of measurement were analyzed by SPSS software.
Results:
At 45 degrees C and 25 degrees C, the concentration of tetramine changed without distinctly in first 3 days and declined significantly from 4 days to 12 days. Thereafter it declined more slowly. At 4 degrees C, the concentration of tetramine changed without distinctly in 12 days and declined significantly from 13 days to 18 days. Thereafter it declined more slowly.
Conclusion:
The concentration of tetra mine in blood samples is stable in 3 days. Thereafter it declined gradually. Temperature also influences the concentration of tetra mine.
Related Concept Videos
¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR
Atomic Spectroscopy: Effects of Temperature
At thermal equilibrium, the relative populations of excited and ground state atoms can be estimated using the Maxwell–Boltzmann distribution. For example, an increase in temperature from...
Le Chatelier's Principle: Changing Temperature
To understand this phenomenon, consider the elementary reaction:
Effect of Temperature Change on Reaction Rate
Atomic Nuclei: Nuclear Spin State Population Distribution
Sample Handling
Samples should be transported carefully from collection points to the laboratory. They should be properly sealed and clearly labeled to prevent cross-contamination. To preserve the sample integrity, optimal temperature conditions during transport are essential. This could involve using...

