RE: Selenium

[Sandman@voeding.tno.nl]

Maybe I missed something, but what are the reference values of Se, and
in what material. Se is stored in hairs and nails (humans) and strongly
'bound'. In blood and plasma or serum the levels are fluctuating. As you
mentioned Se is co-factor of different enzymes, so reference values may
differ in wholeblood and/or plasma and serum, if its analysed in these
materials.

Gr, Hugo

> ----------
> Van: 	CMKSAGEHIL@aol.com[SMTP:CMKSAGEHIL@aol.com]
> Verzonden: 	dinsdag 21 juli 1998 15:35
> Aan: 	RALSTON@AESOP.RUTGERS.EDU; ridecamp@endurance.net
> Onderwerp: 	Re: Selenium
> 
> Dr Ralston is correct that there is a tremendous difference in
> selenium levels
> in different areas.  Not only do you need to know your area, but you
> also need
> to know where your hay comes from.  Have seen people "think" they were
> in a
> less deficient area, but be feeding central Oregon hay, and visa
> versa.
> 
> As to the trickiness of testing--that is why I so strongly recommend
> sending
> ALL samples to ONE lab that does a LOT of testing, as the results vary
> from
> lab to lab.  Michigan State has been doing a good job, and I send all
> my
> samples there, even though there are more local labs that do run
> selenium
> tests.
> 
> Heidi Smith, DVM 
>