> For the complete documentation index, see [llms.txt](https://docs.finngen.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.finngen.fi/finngen-data-specifics/red-library-data-individual-level-data/what-phenotype-files-are-available-in-sandbox-1/other-registers/blood-donor-data-from-the-finnish-red-cross-blood-service-frcbs.md).

# Blood donor data from the Finnish Red Cross Blood Service (FRCBS)

#### FRCBS data is first time released in DF11 and it contain two files

`/finngen/library-red/finngen_R11/FRCBS_blood_donor_data_1.0/data/`

* `finngen_R11_FRCBS_Blood_Donor_Donations_1.0.txt.gz`
* `finngen_R11_FRCBS_Blood_Donor_Deferrals_1.0.txt.gz`

#### Data files contain following information:

1. Number and approximated dates of whole blood donations
2. Approximated dates of sampling and values of Hb measurements
3. Approximated dates of deferrals due to Hb limits
4. Approximated dates of deferrals due to other criteria (no exact cause can be provided)
5. Approximated dates of
   1. serious local donation-related adverse events
   2. serious vasovagal donation-related adverse events
   3. other serious donation-related adverse events.

`finngen_R11_FRCBS_Blood_Donor_Donations_1.0.txt.gz` contains items number 1 and 2:

| Field                  | Description                                                   |
| ---------------------- | ------------------------------------------------------------- |
| FINNGENID              | FinnGen ID of the blood donor                                 |
| BloodDonationTypeKey   | If a whole blood donation attempt was succesfull or not       |
| Hb                     | Measured Hb value in g/L                                      |
| APPROX\_DONATION\_DATE | Randomized date of the donation attempt (within +/- 15 days). |

`finngen_R11_FRCBS_Blood_Donor_Deferrals_1.0.txt.gz` contains number 3-5:

<table><thead><tr><th width="240.5">Field</th><th>Description</th></tr></thead><tbody><tr><td>FINNGENID</td><td>FinnGen ID of the blood donor</td></tr><tr><td>DEFERRAL</td><td><p><strong>HighHb_F175_M195</strong> - too high Hb</p><p><strong>LowHb_F114M124</strong> - too low Hb</p><p><strong>LowHb_F115-124M125-134</strong> - too low Hb</p><p><strong>OtherDeferral</strong> - other type of deferral</p><p><strong>LocalAdverseEvent</strong> - a bruise or such</p><p><strong>VasovagalAdverseEvent</strong> - dizziness, fainting or similar</p><p><strong>OtherAdverseEvent</strong> - other donation related adverse event</p></td></tr><tr><td>APPROX_DEFERRAL_START_DAY</td><td>Randomized start date of the deferral (within +/- 15 days).</td></tr><tr><td>APPROX_DEFERRAL_END_DAY</td><td>Randomized end date of the deferral (within +/- 15 days)</td></tr></tbody></table>