Evaluation of the MP Diagnostics HTLV Blot 2.4

Study Overview
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Brief Summary
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The purpose of this study is: To assess the validity and reproducibility of the MP Diagnostics HTLV Blot 2.4. To conduct a sensitivity analysis of the HTLV Blot 2.4 using a known positive population.

Detailed Description
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This is a retrospective study designed to assess the validity and reproducibility of the MP Diagnostics IVD device, the HTLV Blot 2.4 (MP Blot), in various populations. The study will be conducted at three geographical distinct locations. The validity of the MP Blot will be assessed by calculating the following: Percent negative agreement with CDPHL Algorithm on 200 EIA negative specimens Percent positive agreement with CDPHL Algorithm on 200 EIA repeat reactive specimens The sensitivity of the MP Blot will be evaluated by testing 200 known positive specimens. The study will be performed using three product lots at three clinical sites. The reproducibility of the MP Blot will be assessed by testing two replicates of a three member panel at three clinical testing sites with each of three lots of product over multiple days by three operators.

Official Title
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Evaluation of the MP Diagnostics HTLV Blot 2.4

Conditions
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HTLV I Associated Myelopathies, HTLV-I Infections, HTLV-II Infections, Human T-lymphotropic Virus 1, Human T-lymphotropic Virus 2, HTLV I Associated T Cell Leukemia Lymphoma

Intervention / Treatment
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* Other: CDPHL Algorithm


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: EIA Negative Population Male or female Completion of a health history evaluation for routine donor screening Willing and able to provide informed consent Negative screening assay results for all ARC screening assays EIA Repeat Reactive Population Male or female Completion of a health history evaluation for routine donor screening Willing and able to provide informed consent Previous RR result by bioMerieux ELISA, Abbott EIA, and / or Abbott ChLIA PRISM Known Positive Population Male or female Willing and able to provide informed consent Previous reactive screening test using either the bioMerieux ELISA, the Abbott EIA or the Abbott ChLIA PRISM, followed by supplemental testing Exclusion Criteria: EIA Negative Population Inadequate sample volume for testing Unable to provide samples that meet the sample suitability requirements for testing Positive screening result for any infectious disease tested by ARC EIA Repeat Reactive Population Inadequate sample volume for testing Unable to provide samples that meet the sample suitability requirements for testing Positive result for HIV, HBV, HCV, or any other infectious disease Known Positive Population Unwilling or unable to provide informed consent Unable to provide adequate sample volume for testing Unable to provide samples that meet the sample suitability requirements for testing Positive result for HIV

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| EIA Negative<br>Blood donor specimens that tested non-reactive by previously licensed HTLV screening assay. | Other: CDPHL Algorithm<br>* Supplemental testing algorithm performed by the CDPHL.<br>|
| EIA Repeat Reactive<br>Blood donor specimens that tested repeat reactive by previously licensed HTLV screening assay, but are unconfirmed. | Other: CDPHL Algorithm<br>* Supplemental testing algorithm performed by the CDPHL.<br>|
| Known Positive<br>Blood donor specimens that tested repeat reactive with a licensed HTLV screening assay and have been confirmed through additional, unlicensed supplemental testing. | Other: CDPHL Algorithm<br>* Supplemental testing algorithm performed by the CDPHL.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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HTLV, Confirmatory, Supplemental, Blot, HTLV-I, HTLV-II