What ARE your C-reactive protein, RDW, WBC, and total cholesterol levels?

Just wondering.

I have CRP of 0.03 and RDW of like, 11.4

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What is the usefulness of an RDW?

Its one of the factors that is in the Levine phenotypic age calculation.

There are generally two types of CRP test. The basic one which has a low end of 0.06 and the hsCRP (high sensitivity) which has a low point of 0.03. I know my CRP figure is below the bottom end of hsCRP. However, some labs report it as below 0.03, some report it as 0.03 and some report it as 0.41 (probably because their test does that). It the lab is saying 0.03 they may not be reporting it right, it may be too low to measure instead.

CRP is useful because as it responds to IL-6 it gives an indication of senescent cell load. However, if someone has a bacterial infection it can rocket and that then is not so clear.

Morgan Levine’s phenotypic age calculation is quite useful. However, I think there is a need to understand what lies behind the figures.

Fasting Glucose is a major factor in many biological age calculation systems. WBC is used by Levine, but lower is better. Albumin is used, but it says higher is better when in fact that is a U curve.

Personally I have some problem with my red blood cells and I think it relates to a historic copper deficiency. Hence I am working on improving MCV. (currently 96.1) RDW (currently 13.3) links to much the same information and the variability in MCV.

Given that alcohol drinking can cause variations in MCV driving up RDW in many ways RDW can be seen as a proxy for alcohol consumption.


This is a fascinating discussion. My RDW has been 13.1 for the last 12 years. But I have also been in pretty steady drinker. I recently kneecapped my alcohol consumption trying to improve my sleep. I wonder if it will have an effect? MCV 93.5, hsCRP .9

I tend to either not drink or drink a lot (like more than a bottle of wine or say 6 pints of beer/cider). I do weekly blood tests, but don’t always have RDW. Going back for a few weeks I have 13.3, 12.8, 13.3, 13.1, 13.5, 12.4, 12.8, 13.1

I am not really certain what part of the variation is testing artifacts.

Creatinine is something I have been pleased with having the last two results as 64 and 62 mcmol/L. My lab has the normal range for this as 64-110 where lower is good (higher Glomular Filtration Rate).

Creatinine is, however, very vulnerable to testing delays. Last year I had it as 87 so I am happy with the progress, but I don’t know how much it was affected by a testing delay last year.