诊断试剂加速稳定性试验方案
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Test Protocol for Accelerated Stability Test
1.Test Objective
The accelerated stability test is performed to determine the valid period of the Advanced Quality TM One Step Ebola Test.
2.Principle
The test was based on the model Arrhenius Model of high temperature accelerated test. The acceleration factor is expressed as:
AF=exp {(Ea/k)* [(1/Tu)-(1/Ts)]+ (RHu^n-RHs^n)},
where,
Ea: the start energy (eV),
K: the boltzmann's constant and k=8.6*10E-5eV/K,
T: the absolute temperature,
RH: the relative humidity (in%) ,
The subscript u: the normal state,
The subscript s: was the acceleration state (e.g. Rhu ^ n referred to the n power of relative humidity under normal state),
n: generally n was 2.
Since the product is packed in aluminum foil bags, the humidity factor was not considered; the product is stored under 2-30℃, and the temperature of accelerated stability test is 50℃, then the acceleration factor AF = exp [(0.8 * 10 ^ 5 / 8.6) * (1 / (273 + 30) - 1 / (273 + 50))] = 6.69242, and it can be calculated that, for 24 months of valid period, the time for accelerated test at 50℃ is: 24 months/6.69242=3.586 months.
3. Materials and Methods
3.1 Materials
3.1.1 Advanced Quality TM One Step Ebola Test, lot number:
Lot #1: Lot #2: Lot #3:
3.1.2 LOD quality control 1, prepared by NP antigen 1 from Wuhan Institute of Virology, CAS;
LOD quality control2, prepared by NP antigen 2 (from Fitzgerald Industries):
3.2 Steps
3.2.1 Store the three batches of reagents at 50℃ for up to 4 months;
3.2.2 When stored at 50℃ for 0 months, 1 months, 2 months, 3 months, 4 months, the three batches of reagents were tested by the quality controls, to investigate products’ performance characteristics of quality controls.
3.2.3 Testing with quality controls:
The test result of LOD quality control 1 was positive;
The test result of LOD quality control 2 was positive;
4. Test Results
4.1 Test result of storage at 50℃
Lot No.
Test result
0 month storage
1 months storage
2 months storage
3 months storage
4 months storage
5. Conclusions