Red cell distribution width (RDW aging marker) — Washington, DC.

Washington, DC is the headquarters of the Gerontological Society of America (GSA) -- founded 1945, the organization that advocated for and helped establish the National Institute on Aging in 1974, moved its main office to DC in 1969 -- which publishes the Journals of Gerontology: Biological Sciences and Medical Sciences, the exact journal this standard's foundational citation (Patel KV, Semba RD, Ferrucci L, et al. 2010) appeared in, confirmed via WebFetch to Wikipedia. No honesty-limit caveat needed: GSA is the direct publisher of the citation's own journal. Distinct from the existing Baltimore tile, which is built on the NIA's own Baltimore Longitudinal Study of Aging cohort (the same NIA that GSA itself advocated into existence) rather than the journal's publishing society. RDW -- how variable red blood cell size is -- comes free on any CBC yet is rarely read as what it is: one of the most robust, cheap predictors of all-cause and cardiovascular mortality.

Where

Accredited lab / clinic draw, Washington, DC · Open the map

Pay

$180 proposed

This packet is not funded yet, so this figure is a proposed price and not money waiting in escrow. If a buyer funds it, approved proof settles that price onchain. If nobody funds it, approved proof earns provable credit toward the work instead of cash — recorded, and readable any time at vealth.net/labor/credit/(your wallet). You see which before you claim, never after.

Proof

RDW (%) from a CBC with reference range, compared for flagging only alongside hemoglobin/MCV context

This is exactly what gets it approved. Nothing settles without it.

Level

intermediate

Open until

2026-12-31

Posted by

0x034F…6c89

The creator wallet. Its signature is what approves proof and settles the wage.

How this work is done

A documented method, so this packet comes out the same whoever does it.

Bring

• accredited-lab requisition (CBC with differential)
• chain-of-custody label
• note on known anemia, recent transfusion, or nutrient deficiency

Steps

1. 1. Arrange a standard CBC through an accredited lab (RDW is reported as part of it).
2. 2. Record any known anemia, recent blood loss/transfusion, or nutrient (iron/B12/folate) issues.
3. 3. Capture RDW (%) plus hemoglobin and MCV from the same CBC with reference ranges.
4. 4. Place RDW against the ~11.5-14.5% reference, read alongside hemoglobin/MCV, for flagging only.
5. 5. Attach the report; log RDW with the hemoglobin/MCV context and band; sign it.

What counts as done

• RDW (%) from an accredited-lab CBC with reference range
• Hemoglobin and MCV from the same CBC recorded for context (anemia screen)
• RDW placed against the ~11.5-14.5% reference for flagging only

Proof is measured against these, not judged by taste.