Do My Vits B12 & D Need Increasing?: Hi, had my... - Thyroid UK

Thyroid UK

137,820 members161,642 posts

Do My Vits B12 & D Need Increasing?

HEA72 profile image
7 Replies

Hi, had my vitamin B12 and vitamin D blood test taken on Monday (via Medichecks).

My results:

vitamin B12 (active): 150 nmol/L (lab range 37.5 - 188)

vitamin D: 179 nmol/L (50-250)

Do I need to increase these? I don't know what the optimum levels should be.

Thank you.

Written by
HEA72 profile image
HEA72
To view profiles and participate in discussions please or .
Read more about...
7 Replies
Jaydee1507 profile image
Jaydee1507Administrator

I am assuming you are already supplementing these levels as they are good.

Vit D aim for 100-150.

Active B12 should be over 75.

If anything you could slightly drop your D supplement.

Excess B12 isn't an issue as is water soluble.

Where are your folate and ferritin levels at?

HEA72 profile image
HEA72 in reply to Jaydee1507

Thank you for your feedback. Yes I supplement.

My ferritin: 101 ug/L (lab range 30 - 150)

Folate 44.5nmol/L (lab range 8.83 - 60.8)

I assume these are ok. I feel an improvement with my ferritin being at this level. It's been dragging around 20-40 for a long time even with supplements and high iron foods. Transdermal iron patches helped increase it properly in the end.

Jaydee1507 profile image
Jaydee1507Administrator in reply to HEA72

I'm surprised about the transdermal iron patches. Which ones did you use?

You will probably have to continue supplementing all levels otherwise they will just drop back.

HEA72 profile image
HEA72 in reply to Jaydee1507

Transdermal patch I used:

amazon.co.uk/Patch-Aid-Simp...

Yeah, I thought I might have to carry on supplementing.

SeasideSusie profile image
SeasideSusieRemembering

HEA72

No, you don't need to increase. We suggest

B12: 100+ when it's Active B12

VitD: 100-150nmol/L which is the level recommended by the Vit D Council, Vit D Society and Grassroots Health.

Do you supplement?

HEA72 profile image
HEA72 in reply to SeasideSusie

Ah great, thank you for the feedback. Yes I do supplement. I'm using Cytoplan's B12's in sublingual lozenges (hydroxocobalamin & methylcobalamin+adenosylcobalamin). I take D3+K2 in oil form.

SeasideSusie profile image
SeasideSusieRemembering in reply to HEA72

In that case I'd reduce Vit D to alternate days and retest end of October to see if you need to increase for the winter. There's no benefit going over 150, it's just wasting money.

For B12 I'd stop and see if just the B Complex will maintain your level now, again taking it when you don't need it is wasting money.

You may also like...

Do I need to take a vitamin D supplement?

Graves, my result is below: Serum Vitamin D 70.3 nmol/L <30 nmol/L - vitamin D deficiency 30-79...

Ferritin and Vit D Improved but Folate and Vit B12 Worse

that my Folate and Vitamin B12 levels are now worse. April Ferritin 52.5ug/L (13-150) Folate...

Thyroxine increased, Vit D loading dose, not well, do I start B12 loading dose?

Most recent blood test results: TSH 2.89 mu/L (0.35 - 4.94) FT4 14.5 pmol/L (9.0 -...

B12 and Vit D results - please advise?

please comment on the values on the snippet of blood test results I will be trying to copy into...

Advice on Vit D and Vit b12 dosage

regarding lastest TSH result at 4.3 (taking 75mg levo) Vit D level 22 Vit B12 377 G.P. perscribed...