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   | Vitamin A Laboratory - External Quality Assurance Program (VITAL-EQA) | 
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 | Round 35  /  B-Vitamins  /  B12 | 
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 | INSTRUCTIONS | 
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 | •  E-mail this completed worksheet to:  vitaminalab@cdc.gov | 
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 | •  Round deadline: | 
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 | December 18, 2020 | 
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 | •  All cells highlighted red are required or have invalid data that needs to be revised.  Click on cell to see data requirements. | 
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 | •  Run these samples in the same way as you would routine patient samples. | 
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 | •  Run in singlicate over a period of two consecutive days (Day 1 and Day 2). | 
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 | •  Record all results with three significant figures (i.e., 105, 10.5, 1.05, 0.105). | 
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 | •  Retain the vials in your ultra-cold freezer for at least two weeks after data submission in case there is a question about the ID code or results. | 
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 | Laboratory ID | 
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 | Received Date (MM/DD/YY) | 
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 | Instrument | 
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 | (Manufacturer/Model) | 
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 | Kit Information (if used) | 
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 | (Name/Manufacturer) | 
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 | Low | 
 | High | 
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 | Calibration Range | 
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 | pg/mL | 
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 | LOD | 
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 | pg/mL | 
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 | Run | Assay Date | Sample ID | 
 | Result (pg/mL)
 | < LOD | Note | 
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 | 2 | 
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 | 1 | 
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 | OFFICIAL USE ONLY | 
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