​Using the DNA/RNA Specimen Availability Page

 This query feature will allow you to limit your query to participants that have DNA or RNA available for your proposed lab assays.

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1. Specimen Type: Select a specimen type - DNA or RNA.

  • RNA has already been extracted (from PAXGene tube).
  • DNA is extracted from stored buffy coat. Some DNA has already been extracted (including all DNA from the Long Life Study​).

2. Collection Visit: Select the time point(s) that DNA/RNA was collected. If time point does not matter, select "Any Visit".

  • For most genetic studies, it does not matter what time point the DNA was collected (e.g. GWAS, SNPs).  There are some assays for which time​ point does matter (e.g. methylation, telomere).  If time point does NOT matter, selecting "Any Visit" will improve sample availability for your study.
  • RNA (from PAXgene tubes) was only collected at the Long Life Study visit​.  

3. Mass and Concentration: Enter the minimum DNA/RNA mass and concentration required for your assay(s). Note that Ancillary Studies requesting more than 1 ug DNA or 0.5 ug RNA will need to provide strong justification. Please click [here] to see the limits on biological samples available for ancillary studies. 

4. Negate: Press this button if you want to make the criteria you have selected NOT true. The Negate button is available on all ​criteria screens. To undo, simply click the "Undo Negation" button.​​

For more information on how samples were collected and processed, please see the following:

If you have additional questions that are not answered here, please contact the WHI help desk.