The important points to note, about response of serum B12, from these SNP results are:

• Initially borderline low quoted by SNP
• Increased rapidly after commencing oral B12 on 2 November 2005
• Fell rapidly to 323 pmol/L, after ceasing oral B12 on 10 February 2006
• Continued to fall at much slower rate
• Never fell below SNP normal range
• Increased rapidly after re-commencing oral B12 on 13 November 2006

The important points to note, about response of homocysteine, from these SNP results are:

• Initially 11.9, then 12.3 umol/L, well below maximum limit quoted by SNP.
• Fell rapidly after commencing oral B12 on 2 November 2005, reaching minimum of 7.0 umol/L.
• Increased again, remaining within the range 7.9 to 9.2 umol/L for several months.
• Never exceeded the normal range quoted by SNP.
• Fell rapidly after re-commencing oral B12 on 13 November 2006