glad you're finding the info useful
i tried searching around the solgar web site to find out what specific form of cobalamin is used. no dice. i suspect no news is not good news in this case.
now those results are awesome to have! yay! lol i love your enthusiasm
i had a hunt around for my old search for a copper target, and here is the relevant piece:
"so, 100-114 ug/dL or 17.3-18 umol/L looks like a plausible 'sweet spot'."
there's another case study i had found previously where copper deficiency mri findings resembled those seen in b12 deficiency. note the part about resolution of mr findings, verrry interesting. in that case the patient's serum copper level was only 50 ug/dL (7.85 umol/L!). 10.7 umol/L converts to 68 ug/dL so you're not in quite as bad shape, but definitely a long way from 100-114 ug/dL (or 17.3-18 umol/L)
Copper Deficiency Myeloneuropathy Resembling B12 Deficiency: Partial Resolution of MR Imaging Findings with Copper Supplementationhttp://www.ajnr.org/content/27/10/2112.full.pdf
"Serum copper and ceruloplasmin levels were markedly decreased at 0.05 ng/mL (0.75–1.45 ng/mL) and 1.37..."
so. i'd say definitely yes, amendments are required.
the copper post i did previously has a bunch of research, also a little bit on healthy food sources too (you should be okay in that regard). here's the link anyway (lots of other interesting info to read)general-discussion-f1/topic19529.html#p188525
your zinc levels still need to go up, but it looks like the copper is more important in the short term. here is some wiki info on supplemental forms (needs a little cleanup apparently):
"Different forms of copper supplementation have different absorption rates. For example, the absorption of copper from cupric oxide supplements is lower than that from copper gluconate, sulfate, or carbonate... Many popular vitamin supplements include copper as small inorganic molecules such as cupric oxide. These supplements can result in excess free copper in the brain as the copper can cross the blood-brain barrier directly. Normally, organic copper in food is first processed by the liver which keeps free copper levels under control... copper absorption is enhanced by ingestion of animal protein, citrate, and phosphate. Copper salts, including copper gluconate, copper acetate, or copper sulfate, are more easily absorbed than copper oxides..."
so, the takeaway point seems to be, avoid cupric oxide. my zinc supplement is balanced with copper citrate, but i haven't had copper levels done in a while so who knows what my current absorption is like!
given all that, i wonder what form of copper you are supplementing? if it's a good form, consider a short term therapeutic megadose at the upper limit (10 mg/d) for two weeks, then wash out and retest. backup for the upper limit here: http://hc-sc.gc.ca/fn-an/nutrition/refe ... bl-eng.php
by the way i think RDAs are ridiculous by and large. they're only about preventing deficiency, not ensuring optimal health.