anchor.diff:  "10897-7","IgG Antibody","Eastern equine encephalitis virus Ab.IgG","Qn","Eastern equine encephalitis virus"
   "10898-5","IgM Antibody","Eastern equine encephalitis virus Ab.IgM","Qn","Eastern equine encephalitis virus"
   "10899-3","IgM Antibody","Eastern equine encephalitis virus Ab.IgM","Qn","Eastern equine encephalitis virus"
  -"10900-9","Surface Antibody (HBsAb)","Hepatitis B virus surface Ab","Ord","Hepatitis B"
  +"10900-9","Surface Antibody (HBsAb)","Hepatitis B virus surface Ab","Ord","Hepatitis B virus"
   "10904-1","IgG Antibody","La Crosse virus Ab.IgG","Qn","La Crosse virus"
   "10905-8","IgM Antibody","La Crosse virus Ab.IgM","Qn","La Crosse virus"
   "10906-6","IgG Antibody","Saint Louis encephalitis virus Ab.IgG","Qn","Saint Louis encephalitis virus"
   "10907-4","IgM Antibody","Saint Louis encephalitis virus Ab.IgM","Qn","Saint Louis encephalitis virus"
   "11006-4","Total Antibody","Borrelia burgdorferi Ab","Ord","Borrelia burgdorferi"
  -"11011-4","PCR/amplification","Hepatitis C virus RNA","Qn","Hepatitis C"
  -"11076-7","Western (immuno) blot  (5-1-1-Ab only)","Hepatitis C virus 5-1-1 Ab","Ord","Hepatitis C"
  -"11077-5","Western (immuno) blot (superoxide dismutase only)","Hepatitis C virus superoxide dismutase Ab","Ord","Hepatitis C"
  +"11011-4","PCR/amplification","Hepatitis C virus RNA","Qn","Hepatitis C virus"
  +"11076-7","Western (immuno) blot  (5-1-1-Ab only)","Hepatitis C virus 5-1-1 Ab","Ord","Hepatitis C virus"
  +"11077-5","Western (immuno) blot (superoxide dismutase only)","Hepatitis C virus superoxide dismutase Ab","Ord","Hepatitis C virus"
   "11084-1","Unknown method","Reagin Ab","Qn","Treponema pallidum"
   "11086-6",,"Streptococcus pneumoniae Ag","Ord",
   "11255-7","Culture","Haemophilus ducreyi","Ord","Haemophilus ducreyi"
  -"11258-1","DNA probe - not amplified/PCR","Hepatitis B virus DNA","Qn","Hepatitis B"
  -"11259-9","PCR/amplification","Hepatitis C virus RNA","Ord","Hepatitis C"
  +"11258-1","DNA probe - not amplified/PCR","Hepatitis B virus DNA","Qn","Hepatitis B virus"
  +"11259-9","PCR/amplification","Hepatitis C virus RNA","Ord","Hepatitis C virus"
   "11469-4","Culture","Bacillus anthracis","Ord","Bacillus anthracis"
   "11470-2","Toxin assay","Clostridium botulinum toxin","Qn","Clostridium botulinum"
   "11473-6","Antigen, unknown method","Cryptococcus sp Ag","Qn","Cryptococcus species"
  
positive.code: "12863-7","Western (immuno) blot (41kD Ab only)","Borrelia burgdorferi 41kD Ab","Ord","Borrelia burgdorferi"
  "12867-8","Western (immuno) blot (58kD Ab only)","Borrelia burgdorferi 58kD Ab","Ord","Borrelia burgdorferi"
  "12869-4","Western (immuno) blot (30kD Ab only)","Borrelia burgdorferi 30kD Ab","Ord","Borrelia burgdorferi"
  "13125-0","Western (immuno) blot (c33c Ab only)","Hepatitis C virus c33c Ab","Ord","Hepatitis C"
  "13195-3","Total Antibody","Ehrlichia chaffeensis Ab","Qn","Ehrlichia chaffeensis"
  "13202-7","IgG Antibody","Borrelia burgdorferi Ab.IgG","Ord","Borrelia burgdorferi"
  "13203-5","IgM Antibody","Borrelia burgdorferi Ab.IgM","Ord","Borrelia burgdorferi"
  
negative.code: "6579-7","Culture","Vibrio sp identified","Nom",
  "6581-3","Culture","Vibrio sp identified","Nom",
  "6584-7","Culture","Virus identified","Nom",
  "6585-4","Antigen by EIA/ELISA","Western equine encephalitis virus Ag","Ord","Western equine encephalitis virus"
  "6586-2","Antigen by DFA/IF","Western equine encephalitis virus Ag","Ord","Western equine encephalitis virus"
  "6587-0","Total Antibody","Yellow fever virus Antibody","Qn","Yellow Fever virus"
  "6588-8","Total Antibody","Yellow fever virus Antibody","Qn","Yellow Fever virus"
  "6589-6","Total Antibody","Yellow fever virus Antibody","Qn","Yellow Fever virus"
  