LOINC

Only code will be included. Few or no comments.

library(tidyverse);library(magrittr);library(knitr);options(tibble.print_max = 200)

fname='n:/loinc/Loinc_2.66/AccessoryFiles/PartFile/LoincPartLink.csv'
d<-read_csv(fname)
## Parsed with column specification:
## cols(
##   LoincNumber = col_character(),
##   LongCommonName = col_character(),
##   PartNumber = col_character(),
##   PartName = col_character(),
##   PartCodeSystem = col_character(),
##   PartTypeName = col_character(),
##   LinkTypeName = col_character(),
##   Property = col_character()
## )
names(d)
## [1] "LoincNumber"    "LongCommonName" "PartNumber"     "PartName"      
## [5] "PartCodeSystem" "PartTypeName"   "LinkTypeName"   "Property"
nrow(d)
## [1] 1481908
#d %>% write_rds('c:/temp/lp.rds')

filtering

d %>% count(LinkTypeName)
## # A tibble: 8 x 2
##   LinkTypeName             n
##   <chr>                <int>
## 1 DetailedModel       457590
## 2 DocumentOntology     10987
## 3 Metadata             91437
## 4 Primary             505507
## 5 Radiology            41659
## 6 Search              254856
## 7 SemanticEnhancement   1518
## 8 SyntaxEnhancement   118354
d %>% count(Property)
## # A tibble: 45 x 2
##    Property                                                               n
##    <chr>                                                              <int>
##  1 http://loinc.org/property/adjustment                                 184
##  2 http://loinc.org/property/analyte                                  82071
##  3 http://loinc.org/property/analyte-core                             91388
##  4 http://loinc.org/property/analyte-divisor                           5432
##  5 http://loinc.org/property/analyte-divisor-suffix                      23
##  6 http://loinc.org/property/analyte-gene                              1518
##  7 http://loinc.org/property/analyte-suffix                           21511
##  8 http://loinc.org/property/category                                    49
##  9 http://loinc.org/property/challenge                                 6211
## 10 http://loinc.org/property/CLASS                                    91388
## 11 http://loinc.org/property/COMPONENT                                91388
## 12 http://loinc.org/property/count                                      148
## 13 http://loinc.org/property/document-kind                             2878
## 14 http://loinc.org/property/document-role                              991
## 15 http://loinc.org/property/document-setting                          2878
## 16 http://loinc.org/property/document-subject-matter-domain            2373
## 17 http://loinc.org/property/document-type-of-service                  1867
## 18 http://loinc.org/property/METHOD_TYP                               87822
## 19 http://loinc.org/property/PROPERTY                                173459
## 20 http://loinc.org/property/rad-anatomic-location-imaging-focus       5436
## 21 http://loinc.org/property/rad-anatomic-location-laterality          3493
## 22 http://loinc.org/property/rad-anatomic-location-laterality-prese~   3475
## 23 http://loinc.org/property/rad-anatomic-location-region-imaged       6335
## 24 http://loinc.org/property/rad-guidance-for-action                   1147
## 25 http://loinc.org/property/rad-guidance-for-approach                  345
## 26 http://loinc.org/property/rad-guidance-for-object                    470
## 27 http://loinc.org/property/rad-guidance-for-presence                 1021
## 28 http://loinc.org/property/rad-maneuver-maneuver-type                 380
## 29 http://loinc.org/property/rad-modality-subtype                      1075
## 30 http://loinc.org/property/rad-modality-type                         6016
## 31 http://loinc.org/property/rad-pharmaceutical-route                  1923
## 32 http://loinc.org/property/rad-pharmaceutical-substance-given        2410
## 33 http://loinc.org/property/rad-reason-for-exam                        446
## 34 http://loinc.org/property/rad-subject                                 33
## 35 http://loinc.org/property/rad-timing                                2684
## 36 http://loinc.org/property/rad-view-aggregation                      3302
## 37 http://loinc.org/property/rad-view-view-type                        1668
## 38 http://loinc.org/property/SCALE_TYP                               173459
## 39 http://loinc.org/property/search                                  254856
## 40 http://loinc.org/property/super-system                             19734
## 41 http://loinc.org/property/SYSTEM                                   91388
## 42 http://loinc.org/property/system-core                              63564
## 43 http://loinc.org/property/time-core                                82071
## 44 http://loinc.org/property/time-modifier                              210
## 45 http://loinc.org/property/TIME_ASPCT                               91388
d2 <-d  %>% filter(LinkTypeName=='Primary')
d2 %>% write_csv('LoincPartLinkPrimary.csv')

nrow(d2)
## [1] 505507
d2 %>% count(Property)
## # A tibble: 6 x 2
##   Property                                 n
##   <chr>                                <int>
## 1 http://loinc.org/property/COMPONENT  91388
## 2 http://loinc.org/property/METHOD_TYP 48567
## 3 http://loinc.org/property/PROPERTY   91388
## 4 http://loinc.org/property/SCALE_TYP  91388
## 5 http://loinc.org/property/SYSTEM     91388
## 6 http://loinc.org/property/TIME_ASPCT 91388

HIV use case

source_code='20447-9'
d2 %>% filter(LoincNumber==source_code) %>% kable()
LoincNumber LongCommonName PartNumber PartName PartCodeSystem PartTypeName LinkTypeName Property
20447-9 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
20447-9 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP6836-3 NCnc http://loinc.org PROPERTY Primary http://loinc.org/property/PROPERTY
20447-9 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP6960-1 Pt http://loinc.org TIME Primary http://loinc.org/property/TIME_ASPCT
20447-9 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP7576-4 Ser/Plas http://loinc.org SYSTEM Primary http://loinc.org/property/SYSTEM
20447-9 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP7753-9 Qn http://loinc.org SCALE Primary http://loinc.org/property/SCALE_TYP
20447-9 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP6464-4 Probe.amp.tar http://loinc.org METHOD Primary http://loinc.org/property/METHOD_TYP 
#component
component='LP38425-2'
aa<-d2 %>% filter(PartNumber==component & PartTypeName=='COMPONENT')

#second
#only one deprecated
component='LP68352-1'  #cd4
aa2<-d2 %>% filter(PartNumber==component & PartTypeName=='COMPONENT')

source_code='80223-1' #cd4
d2 %>% filter(LoincNumber==source_code) %>% kable()
LoincNumber LongCommonName PartNumber PartName PartCodeSystem PartTypeName LinkTypeName Property
80223-1 CD4 cells/100 lymphocytes in Unspecified specimen LP285495-0 Cells.CD4/100 lymphocytes http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
80223-1 CD4 cells/100 lymphocytes in Unspecified specimen LP6838-9 NFr http://loinc.org PROPERTY Primary http://loinc.org/property/PROPERTY
80223-1 CD4 cells/100 lymphocytes in Unspecified specimen LP6960-1 Pt http://loinc.org TIME Primary http://loinc.org/property/TIME_ASPCT
80223-1 CD4 cells/100 lymphocytes in Unspecified specimen LP7735-6 XXX http://loinc.org SYSTEM Primary http://loinc.org/property/SYSTEM
80223-1 CD4 cells/100 lymphocytes in Unspecified specimen LP7753-9 Qn http://loinc.org SCALE Primary http://loinc.org/property/SCALE_TYP 
source_code='20416-4' #cd4
d2 %>% filter(LoincNumber==source_code) %>% kable()
LoincNumber LongCommonName PartNumber PartName PartCodeSystem PartTypeName LinkTypeName Property
20416-4 Hepatitis C virus RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
20416-4 Hepatitis C virus RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP6836-3 NCnc http://loinc.org PROPERTY Primary http://loinc.org/property/PROPERTY
20416-4 Hepatitis C virus RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP6960-1 Pt http://loinc.org TIME Primary http://loinc.org/property/TIME_ASPCT
20416-4 Hepatitis C virus RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP7576-4 Ser/Plas http://loinc.org SYSTEM Primary http://loinc.org/property/SYSTEM
20416-4 Hepatitis C virus RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP7753-9 Qn http://loinc.org SCALE Primary http://loinc.org/property/SCALE_TYP
20416-4 Hepatitis C virus RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP6464-4 Probe.amp.tar http://loinc.org METHOD Primary http://loinc.org/property/METHOD_TYP 
# CPT4 to LOINC equivalent (SNOMED)
# Hepatitis C virus RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection
# 3016770
# LOINC
# Hepatitis C virus RNA [Units/volume] (viral load) in Serum or Plasma by Probe with amplification
# 3024429
# LOINC

#LP38335-3  Hepatitis C virus RNA

component='LP38335-3'
aa3<-d2 %>% filter(PartNumber==component & PartTypeName=='COMPONENT')
aa3 %>% write_csv('hepc.csv')

31 tests of HIV RNA and 34 tests of hep C RNA

kable(aa)
LoincNumber LongCommonName PartNumber PartName PartCodeSystem PartTypeName LinkTypeName Property
10351-5 HIV 1 RNA [Units/volume] (viral load) in Serum or Plasma by Probe with amplification LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
10682-3 Deprecated HIV 1 RNA [Units/volume] in Serum or Plasma by Probe with amplification LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
20447-9 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
21008-8 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
21333-0 HIV 1 RNA [#/volume] in Serum LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
23876-6 HIV 1 RNA [Units/volume] (viral load) in Plasma by Probe with signal amplification LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
24013-5 HIV 1 RNA [Interpretation] in Serum LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
25835-0 HIV 1 RNA [Presence] in Serum or Plasma by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
25836-8 HIV 1 RNA [#/volume] (viral load) in Unspecified specimen by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
29539-4 HIV 1 RNA [Log #/volume] (viral load) in Plasma by Probe with signal amplification LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
29541-0 HIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
41497-9 HIV 1 RNA [Log #/volume] (viral load) in Cerebral spinal fluid by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
41498-7 HIV 1 RNA [#/volume] (viral load) in Cerebral spinal fluid by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
41513-3 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe with amplification detection limit = 400 copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
41514-1 HIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe with amplification detection limit = 2.6 log copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
41515-8 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe with amplification detection limit = 75 copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
41516-6 HIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe with amplification detection limit = 1.9 log copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
42917-5 HIV 1 RNA [Presence] in Cerebral spinal fluid by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
47359-5 HIV 1 RNA [Presence] in Serum or Plasma from Donor by Probe with amplification LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
48510-2 HIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 1.7 log copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
48511-0 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 50 copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
48551-6 HIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 400 copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
48552-4 HIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 2.6 log copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49890-7 HIV 1 RNA [Log #/volume] (viral load) in Unspecified specimen by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
5017-9 HIV 1 RNA [Presence] in Blood by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
5018-7 HIV 1 RNA [Presence] in Unspecified specimen by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
51780-5 HIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 0.5 log copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
59419-2 HIV 1 RNA [#/volume] (viral load) in Plasma by Probe with signal amplification LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
62469-2 HIV 1 RNA [Units/volume] (viral load) in Serum or Plasma by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
70241-5 HIV 1 RNA [#/volume] (viral load) in Plasma by Probe and target amplification method detection limit = 20 copies/mL LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
77369-7 HIV 1 RNA [Presence] in Semen by NAA with probe detection LP38425-2 HIV 1 RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT 
kable(aa3)
LoincNumber LongCommonName PartNumber PartName PartCodeSystem PartTypeName LinkTypeName Property
10676-5 Hepatitis C virus RNA [Units/volume] (viral load) in Serum or Plasma by Probe with amplification LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
11011-4 Hepatitis C virus RNA [Units/volume] (viral load) in Serum or Plasma by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
11259-9 Hepatitis C virus RNA [Presence] in Serum or Plasma by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
20416-4 Hepatitis C virus RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
20571-6 Hepatitis C virus RNA [#/volume] (viral load) in Serum or Plasma by Probe with signal amplification LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
29609-5 Hepatitis C virus RNA [Units/volume] (viral load) in Serum or Plasma by Probe with signal amplification LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
34703-9 Hepatitis C virus RNA [Units/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 500 IU/mL LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
34704-7 Hepatitis C virus RNA [Units/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 50 iU/mL LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
38180-6 Hepatitis C virus RNA [log units/volume] (viral load) in Serum or Plasma by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
42003-4 Hepatitis C virus RNA [Log #/volume] (viral load) in Serum or Plasma by Probe with signal amplification LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
42617-1 Hepatitis C virus RNA [log units/volume] (viral load) in Serum or Plasma by Probe with signal amplification LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
47252-2 Hepatitis C virus RNA [Log #/volume] (viral load) in Serum or Plasma by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
48576-3 Hepatitis C virus RNA [Presence] in Unspecified specimen by Probe with signal amplification LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49369-2 Hepatitis C virus RNA [#/volume] (viral load) in Cerebral spinal fluid by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49370-0 Hepatitis C virus RNA [#/volume] (viral load) in Bone marrow by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49371-8 Hepatitis C virus RNA [#/volume] (viral load) in Tissue by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49372-6 Hepatitis C virus RNA [Log #/volume] (viral load) in Unspecified specimen by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49373-4 Hepatitis C virus RNA [Log #/volume] (viral load) in Cerebral spinal fluid by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49374-2 Hepatitis C virus RNA [Log #/volume] (viral load) in Bone marrow by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49375-9 Hepatitis C virus RNA [Log #/volume] (viral load) in Tissue by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49376-7 Hepatitis C virus RNA [Units/volume] (viral load) in Unspecified specimen by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49377-5 Hepatitis C virus RNA [Units/volume] (viral load) in Cerebral spinal fluid by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49378-3 Hepatitis C virus RNA [Units/volume] (viral load) in Bone marrow by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49379-1 Hepatitis C virus RNA [Units/volume] (viral load) in Tissue by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49380-9 Hepatitis C virus RNA [#/volume] (viral load) in Unspecified specimen by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49603-4 Hepatitis C virus RNA [log units/volume] (viral load) in Cerebral spinal fluid by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49604-2 Hepatitis C virus RNA [log units/volume] (viral load) in Bone marrow by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49605-9 Hepatitis C virus RNA [log units/volume] (viral load) in Unspecified specimen by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49608-3 Hepatitis C virus RNA [log units/volume] (viral load) in Tissue by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
49758-6 Hepatitis C virus RNA [Units/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 5 iU/mL LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
5010-4 Hepatitis C virus RNA [Presence] in Blood by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
5011-2 Hepatitis C virus RNA [Presence] in Tissue by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
5012-0 Hepatitis C virus RNA [Presence] in Unspecified specimen by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT
51655-9 Hepatitis C virus RNA [Presence] in Body fluid by NAA with probe detection LP38335-3 Hepatitis C virus RNA http://loinc.org COMPONENT Primary http://loinc.org/property/COMPONENT

What methods they use

ab<-d2 %>% filter(LoincNumber %in% aa$LoincNumber) 

ac<-ab  %>% filter(PartTypeName=='METHOD') %>% count(PartTypeName,PartName,PartNumber) 
kable(ac %>%  arrange(desc(n)))
PartTypeName PartName PartNumber n
METHOD Probe.amp.tar LP6464-4 12
METHOD Probe.amp LP6462-8 3
METHOD Probe.amp.sig LP6463-6 3
METHOD Probe LP6459-4 1
METHOD Probe.amp detection limit = 1.9 log copies/mL LP35822-3 1
METHOD Probe.amp detection limit = 2.6 log copies/mL LP35820-7 1
METHOD Probe.amp detection limit = 400 copies/mL LP35819-9 1
METHOD Probe.amp detection limit = 75 copies/mL LP35821-5 1
METHOD Probe.amp.tar detection limit = 0.5 log copies/mL LP66656-7 1
METHOD Probe.amp.tar detection limit = 1.7 log copies/mL LP62517-5 1
METHOD Probe.amp.tar detection limit = 2.6 log copies/mL LP62748-6 1
METHOD Probe.amp.tar detection limit = 20 copies/mL LP145954-6 1
METHOD Probe.amp.tar detection limit = 400 copies/mL LP62747-8 1
METHOD Probe.amp.tar detection limit = 50 copies/mL LP62518-3 1

Thanks to the parts, we can navigate test by component and see their methods.