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[bioontology-support] LOINC Ontology Question

Ray Fergerson ray.fergerson at
Wed Aug 21 15:20:54 PDT 2013

There are terms in the LOINC ontology for positive and negative:


65-5&jump_to_nav=true> &conceptid=LP21065-5&jump_to_nav=true

19-8&jump_to_nav=true> &conceptid=LP20719-8&jump_to_nav=true


I didn't see anything in LOINC for "Weakly Positive". This result is
consistent with what I see when I browse LOINC with the UMLS browser. (We
get LOINC via UMLS).






From: Nigam Shah [mailto:nigam at] 
Sent: Monday, August 19, 2013 8:29 PM
To: Rimma Belenkaya
Cc: support at; Ray Fergerson
Subject: Re: LOINC Ontology Question


Hi Rimma,


I am cc'ing support at, so that the right person can help you
with this.


Best regards,



On Mon, Aug 19, 2013 at 4:16 PM, Rimma Belenkaya
<Rimma.Belenkaya at> wrote:

Hello Nigam,


I am a knowledge engineer working at Albert Einstein College of Medicine
Research Informatics. We have met at AMIA several times, but I am not sure
if you remember me. I am currently working on adapting LOINC ontology to
our metadata. My director, Dr. Parsa Mirhaji, suggested contacting you. If
you are not the right person to answer my question I would appreciate if
you could re-direct me to one.


My question is about terms that have pre-defined set of values (e.g.
Positive, Negative, etc). For example, Nuclear Ab [Presence] in Serum, ID
8061-4 is usually presented as Positive, Negative, Weakly Positive, etc.
Except for the Ord scale_typ, I could not find any references to
particular values in this scale. Are they defined in this ontology? If
yes, where can I find them and what term attribute(s) points to the scale
values?  I am using the LOINC ontology at  


Thank a lot,


Rimma Belenkaya, M.S., M.A.

Lead Software Developer, Research Informatics Core (RIC)

Harold & Muriel Block Institute for Clinical & Translational Research at
Einstein and Montefiore 

Albert Einstein College of Medicine

1300 Morris Park Ave, Bronx, NY 10461

(718) 430-2762 <tel:%28718%29%20430-2762>  Office

Rimma.Belenkaya at






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