I have questions on some LOINC that made it to the top ranks but others with same format didnt make it. For example,
<span style=“text-decoration: underline;”>32515-9 CD3+CD4+ (T4 helper) cells [#/volume] in Unspecified specime</span>n is rank 602. But with the same format,
<span style=“text-decoration: underline;”>32517-5 CD3+CD8+ (T8 suppressor cells) cells [#/volume] in Unspecified specimen</span> is not ranked. My problem is I assume that most cd4 and cd8 absolute ct are run on BLOOD as spx. But after seeing 32515-9 as ranked, made me cautious to check if “blood” is stated as the specimen for abs cd4+, or else map it to 32515-9. Doing that, I should be cautious as well with cd8 with unspecified specimen? the problem is that 32517-5 is not rank but “blood” as specimen is (14135-8 CD3+CD8+ (T8 suppressor cells) cells [#/volume] in Blood).
This also happens with other LOINC such as:
Erythrocytes [Presence] in Urine (ranked)
Leukocytes [Presence] in Urine (not ranked)
We totally avoid using unranked codes unless the result specified a method or sub-component that would affect the interpretation of the result. Other than that, I hope to get a response on this since we are having trouble on why some ranked codes didnt make it to the top and some does but with the counterpart not making it such as my examples.