Converting ug/L to nmol/L or not

[Polo22]

trying to get it straight in my head to no avail , couldn't find a formula but found this,, losing it

endmemo.com/medical/unitcon...

[helvella]

In my Vade Mecum document I have a section on calculators for such things. The first one is this:

Calculators and Convertors

Links to various online calculators and convertors.

B12 and many other functions

SI units Conversion Calculator. Convert Vitamin B12 (Cobalamin, Cyanocobalamin) level to pmol/L, pg/mL, pg/dL, pg/100mL, pg%, pg/L, ng/L . Clinical laboratory units online conversion from conventional or traditional units to Si units.

unitslab.com/node/141

Rest of the document is available, if you wish:

helvella - Vade Mecum for Thyroid

The term vade mecum means:

1. A referential book such as a handbook or manual.

2. A useful object, constantly carried on one’s person.

Please don't get put off by the number of pages!

In particular, it is not intended that you sit and read the document. Just that you download it and know you can look things up.

Not everything is in this one document - my major medicines document is still separate!

From Dropbox:

dropbox.com/s/vp5ct1cwc03bl...

From Google Drive:

drive.google.com/file/d/1ZW...

[Polo22 in reply to helvella]

Great I knew someone had mentioned calculators but couldn't remember who thank you . Getting quite obsessed trying to understand this all. Don't think omitting supplements and B12 injections is helping any 🙃 pain in feet and legs is creeping back too

[Cherylclaire Forum Support in reply to Polo22]

Is this any help ?B12 measured in either ng/L or pmol/L

1 pmol/L = 1.355ng/L

148 x 1.355 = 200.54

So 148 pmol/L is about 200ng/L (which seems to be used in research fairly often as a range baseline for B12)

But decisions about treatment rely on what is considered to be below the start of "normal" range for B12 locally and do vary considerably- depending on where you live.