The diluent (sterile 0.4% NaCl) which used for dilute reference rabies vaccine and test vaccine was expired before testing. The expiry date of diluent was 09 June 2014 while the testing date was 11 June 2014. As immediately investigation this test (NIH test no 0414) performed with 2 product. Vero Rabies vaccine lot no 01A1305 and Vero Rabies vaccine lot no 01A1101 (stability study at 36 months time point). The expired diluent was packed with Vero Rabies vaccine lot no 01A1101.
The concerning of validity of the test. The test results meet all validity and acceptance criteria both reference and test vaccine. Therefore expired diluent was no impact to the test result
In additional as reviewing the stability study of sterile 0.4% NaCl, the result was shown that the diluent still meet the requirement at shelf life 62 months. So it can be confirm that the expired diluent was no impact to the test result.