Vit D3 how important to test?

[Guest guest]

Hello again,

I am trying to get some more vit/mineral tests done as I will be in Singapore

for 4 days next week in between jobs in a remote outback community in Aus and

who knows where in Brunei.

Can anyone confirm that the following tests are the ones I need? I've made so

many notes from previous posts that I am all confused now. I have had iron,

ferritin done.

Magnesium, folate, potassium, copper, B12, Zinc, D3.

And just how important is it to tests D3? the other tests range from $12 to

$60, but D3 is $700 as they have to send it from Singapore to a lab in the USA

to get it done!!! $700 is out of my leaugue, so it's not an option. Am I going

to be missing a key piece of the jigsaw puzzle?

Hope someone can advise! Thanks,