intermediate work · Accredited lab / clinic draw, Sacramento, CA
Kidney function — eGFR + cystatin C — Sacramento.
Fund it for $340. Proof lands onchain when it's done.
$340 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.
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What the work involvesSacramento, CA was one of the 4 original US field-center communities of the Cardiovascular Health Study, the actual cohort behind this standard's muscle-mass-independent mortality evidence: 4,663 elderly adults followed a median 9.3 years, each 1-SD (0.18 mg/L) rise in cystatin C carrying a hazard ratio of 1.33 for all-cause death and 1.42 for cardiovascular death, independent of creatinine-based eGFR (Shlipak MG, et al. Ann Intern Med. 2006;145(4):237-246). Chronic kidney decline is usually silent until late, and creatinine-only eGFR misreads people with high or low muscle mass. Offered in one of the four real communities that built this evidence.
How this work is done
A documented method, so this packet comes out the same whoever does it.
Bring
- accredited-lab requisition (creatinine + cystatin C, eGFR reported)
- chain-of-custody label
- note on hydration, recent heavy exercise, and creatine intake
Steps
- 1. Arrange creatinine and cystatin C through an accredited lab so a combined eGFR can be reported (cystatin C removes the muscle-mass bias of creatinine-only eGFR).
- 2. Record hydration status, recent heavy exercise, and creatine supplementation (all can transiently shift creatinine).
- 3. Capture creatinine, cystatin C, and the reported eGFR (mL/min/1.73m²) with reference ranges.
- 4. Place eGFR against the ≥60 threshold for flagging only.
- 5. Attach the report; log the values, context, and eGFR band; sign it.
What counts as done
- Creatinine and cystatin C from an accredited lab with the reported eGFR
- Note hydration/recent heavy exercise or high creatine intake (can shift creatinine)
- eGFR placed against the ≥60 threshold for flagging only
Proof is measured against these, not judged by taste.
What is promised, and what is not.
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