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c/bloodwork·submitted 1 year ago by u/iman_falk

[Discussion] ferritin is doing more work than we give it credit for

Discussionbranch of 7 comments

ferritin is doing more work than we give it credit for, and I am aware this is a minority view on this board. Different laboratories use different assay platforms with different calibration. Comparing across labs adds a systematic offset that is invisible on the report. Substantial weight loss independently moves…

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7 comments, started 1 year ago
u/bence_zamora39 points·1 year ago

assay method matters, especially between different labs

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u/ahmed_fonseca9 points·1 year ago

Time of day, fasting state, hydration and recent exercise all move common markers. Standardising the draw conditions is free and it removes most of the apparent variability.

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u/iman_falkOP6 points·1 year ago

That is a non-fasting value and the interval you are comparing it against is a fasting one.

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u/amara_dziedzic5 points·1 year ago

Brought the whole set to my clinician rather than one flagged value. Completely different conversation.

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u/transit_variance4 points·1 year ago

Do you have a baseline from before you started?

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u/neha_rahimi1 point·1 year ago

do not change three things and then read the panel

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