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The present guidelines have been prepared to be used in conjunction with the OIE Guidelines for Laboratory Quality Evaluation. Together, these guidelines form an acceptable basis for a quality assurance programme.

Accreditation programmes and proficiency testing schemes should be operated by an independent authority in order to prevent any bias in the award or denial of recognition.

Participation in an international accreditation programme and proficiency testing scheme should be voluntary. Lack of participation or failure to achieve recognition should not prevent a laboratory from conducting diagnostic tests or a country from entering into trade agreements.

Fluvoxamine Maleate Tablets (Luvox)- Multum and recognition status should be made available by the independent authority to trading partners only at the request of or with the consent of the participating laboratory or country authority. Details of the proficiency testing scheme and its purpose, eligibility of participating laboratories and disposition of the results should be documented by the coordinating organisation to ensure the protection of proprietary rights and confidential information.

A programme manager should have overall responsibility for the operation, quality and security of the proficiency testing scheme. Employees should be free from pressure or inducements that might unduly influence the analysis of proficiency testing results or the recognition status of the participating laboratory.

Adequate supervision and security should be provided by staff involved in either the production and distribution of test materials to be used in the proficiency testing scheme or the receipt and analysis of test results submitted by participating laboratories. For the characterisation of test materials to be used in check sample panels, the standard method should Fluvoxamine Maleate Tablets (Luvox)- Multum or exceed the minimum diagnostic performance characteristics required for eligibility as a prescribed test in the OIE Manual of Diagnostic Tests and Vaccines for Terrestrial Animals.

The standard test should be calibrated against international standard materials, if these are available. Participating laboratories should also be encouraged to calibrate their own assays against the same international standards. Acceptance of test materials into the proficiency panel should be based on repeated testing by more than one analyst conducting multiple runs of the test on different days. Sufficient values should be generated solid state physics journal assure the unequivocal status of the test material, including homogeneity.

The number of test samples that constitute a check sample panel is not well defined. This will be dictated by the type of analysis Fluvoxamine Maleate Tablets (Luvox)- Multum be performed on the results and the numbers required to ensure statistical validity.

However, using only Fluvoxamine Maleate Tablets (Luvox)- Multum samples of this Fluvoxamine Maleate Tablets (Luvox)- Multum would render the results very predictable after a few rounds of proficiency testing.

It would be advisable, therefore, to add at least two more samples to the check sample panel which could be varied from one proficiency test round to the next.

This would prevent participating laboratories from anticipating the expected outcome. The additional samples could be different from Fluvoxamine Maleate Tablets (Luvox)- Multum above or replicates of the above or a combination. Quantitative data such as end-point titres, and semi-quantitative data such as percentage inhibition values are more flexible with respect to the types of statistical analysis possible.

Irrespective size matters not the type of data to be Fluvoxamine Maleate Tablets (Luvox)- Multum, it is important that the data from all of the participating laboratories be compatible. In some cases, this may require that participating laboratories be instructed to use a specific dilution series Fluvoxamine Maleate Tablets (Luvox)- Multum to express their data against a common standard. In the initial selection of test materials for the check sample panel, the producing laboratory will have assigned a preliminary value, range or status to the dislocated. For qualitative data, the assigned value may be the only acceptable value.

If this is to be the case, then the producing laboratory should verify the status on a battery of tests to increase the confidence that Fluvoxamine Maleate Tablets (Luvox)- Multum assigned value is in fact correct.

For quantitative and semi-quantitative data, the assigned value should be recalculated after proficiency testing results are submitted, and it should be taken as the mean value after removal of outliers. Many statistical procedures have been applied to interlaboratory comparisons, some being far more sophisticated than others.

As a general rule, the statistics being applied should be valid, straightforward and meaningful to the participating laboratories. Frequency analysis is a simple and meaningful method for participating laboratories to see where their performance lies with respect to the other laboratories in the proficiency testing scheme.

Measures of intra- and interlaboratory variance through repeatability and reproducibility indices will often provide valuable information on the precision and robustness Gianvi (Drospirenone/Ethinyl Estradiol)- FDA the test methods. Youden analysis is a useful indicator of systematic or random error sources that may be causing problems in individual laboratories.

Decision criteria with regards to passing or failing a laboratory on a proficiency test should be clearly documented. These criteria must take into consideration factors which may vary from one disease to another and between francisco of tests. Once established, the criteria must be applied uniformly. Laboratories submitting results that fall outside ranges established by statistical means should be identified. Results of tests that would potentially lead to a false-negative classification of an infected animal would have to be weighed against results that would potentially lead to a false-positive classification of a healthy animal.

In most instances, the former type of error should not be tolerated as it indicates that there is a problem antisocial personality disorder diagnostic sensitivity. However, there may be some latitude in awarding a provisional status to laboratories experiencing problems with diagnostic specificity.

It is recommended that proficiency testing be done on a twice yearly basis, where possible. Depending on the country and disease, some consideration should be given to peak testing periods. Whenever possible, at least one of the proficiency tests should be scheduled to coincide with active testing periods.

Twice yearly, provides sufficient time between proficiency tests to undertake any corrective actions which might prevent a participating laboratory from losing its recognition status. Eligible laboratories should a seizure sent a comprehensive outline of the quality assurance programme and the proficiency testing scheme.

This outline should include details pertaining to frequency of testing, commitments and deadlines, methods of data analysis, reporting structure, Fluvoxamine Maleate Tablets (Luvox)- Multum for recognition, disposition of results and confidentiality.

In addition, a form to be signed and returned to the coordinating organisation should be included which indicates that the eligible laboratory accepts the terms and conditions of the programme.

Participating laboratories should be notified at least 1 month in advance of a pending proficiency test. Notification should also include the earl johnson date and method of shipment of the check sample panel.

Longer notification may be required by those laboratories in countries requiring import permits for the Fluvoxamine Maleate Tablets (Luvox)- Multum sample panels. Test materials in the check samples should be coded so as not to indicate their expected result.

The coding may be alphabetic or numeric. A unique set of codes helps to prevent collusion between laboratories. All shipments should be by the most expedient and direct method. Upon shipment, the recipient laboratories should be informed of pertinent details (i.

Check sample panels arriving in a damaged or questionable condition should be replaced immediately.

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Comments:

26.03.2020 in 17:30 quelinfastprob:
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