Clinica Chimica Acta

The Official Journal of the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) Clinica Chimica Acta is a high-quality journal which publishes original Research Communications in the field of clinical chemistry and laboratory medicine, defined as the diagnostic application of chemistry, biochemistry, immunochemistry, biochemical aspects of hematology, toxicology, and molecular biology to the study of human disease in body fluids and cells. The objective of the journal is to publish novel information leading to a better understanding of biological mechanisms of human diseases, their prevention, diagnosis, and patient management. Reports of an applied clinical character are also welcome. Papers concerned with normal metabolic processes or with constituents of normal cells or body fluids, such as reports of experimental or clinical studies in animals, are only considered when they are clearly and directly relevant to human disease. Evaluation of commercial products have a low priority for publication, unless they are novel or represent a technological breakthrough. Studies dealing with effects of drugs and natural products and studies dealing with the redox status in various diseases are not within the journal's scope. Development and evaluation of novel analytical methodologies where applicable to diagnostic clinical chemistry and laboratory medicine, including point-of-care testing, and topics on laboratory management and informatics will also be considered. Studies focused on emerging diagnostic technologies and (big) data analysis procedures including digitalization, mobile Health, and artificial Intelligence applied to Laboratory Medicine are also of interest.

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Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Category	Year	Quartile
Biochemistry	1999	Q3
Biochemistry	2000	Q3
Biochemistry	2001	Q3
Biochemistry	2002	Q3
Biochemistry	2003	Q3
Biochemistry	2004	Q3
Biochemistry	2005	Q3
Biochemistry	2006	Q3
Biochemistry	2007	Q2
Biochemistry	2008	Q2
Biochemistry	2009	Q2
Biochemistry	2010	Q2
Biochemistry	2011	Q2
Biochemistry	2012	Q2
Biochemistry	2013	Q2
Biochemistry	2014	Q2
Biochemistry	2015	Q2
Biochemistry	2016	Q2
Biochemistry	2017	Q2
Biochemistry	2018	Q2
Biochemistry	2019	Q2
Biochemistry	2020	Q2
Biochemistry	2021	Q2
Biochemistry	2022	Q1
Biochemistry	2023	Q2
Biochemistry (medical)	1999	Q2
Biochemistry (medical)	2000	Q2
Biochemistry (medical)	2001	Q2
Biochemistry (medical)	2002	Q2
Biochemistry (medical)	2003	Q2
Biochemistry (medical)	2004	Q2
Biochemistry (medical)	2005	Q2
Biochemistry (medical)	2006	Q2
Biochemistry (medical)	2007	Q1
Biochemistry (medical)	2008	Q1
Biochemistry (medical)	2009	Q1
Biochemistry (medical)	2010	Q1
Biochemistry (medical)	2011	Q1
Biochemistry (medical)	2012	Q1
Biochemistry (medical)	2013	Q1
Biochemistry (medical)	2014	Q1
Biochemistry (medical)	2015	Q1
Biochemistry (medical)	2016	Q1
Biochemistry (medical)	2017	Q1
Biochemistry (medical)	2018	Q1
Biochemistry (medical)	2019	Q2
Biochemistry (medical)	2020	Q2
Biochemistry (medical)	2021	Q2
Biochemistry (medical)	2022	Q1
Biochemistry (medical)	2023	Q1
Clinical Biochemistry	1999	Q2
Clinical Biochemistry	2000	Q3
Clinical Biochemistry	2001	Q2
Clinical Biochemistry	2002	Q3
Clinical Biochemistry	2003	Q2
Clinical Biochemistry	2004	Q2
Clinical Biochemistry	2005	Q2
Clinical Biochemistry	2006	Q2
Clinical Biochemistry	2007	Q2
Clinical Biochemistry	2008	Q2
Clinical Biochemistry	2009	Q2
Clinical Biochemistry	2010	Q2
Clinical Biochemistry	2011	Q2
Clinical Biochemistry	2012	Q2
Clinical Biochemistry	2013	Q2
Clinical Biochemistry	2014	Q2
Clinical Biochemistry	2015	Q2
Clinical Biochemistry	2016	Q2
Clinical Biochemistry	2017	Q2
Clinical Biochemistry	2018	Q1
Clinical Biochemistry	2019	Q2
Clinical Biochemistry	2020	Q2
Clinical Biochemistry	2021	Q1
Clinical Biochemistry	2022	Q1
Clinical Biochemistry	2023	Q1
Medicine (miscellaneous)	1999	Q1
Medicine (miscellaneous)	2000	Q1
Medicine (miscellaneous)	2001	Q1
Medicine (miscellaneous)	2002	Q1
Medicine (miscellaneous)	2003	Q1
Medicine (miscellaneous)	2004	Q1
Medicine (miscellaneous)	2005	Q1
Medicine (miscellaneous)	2006	Q1
Medicine (miscellaneous)	2007	Q1
Medicine (miscellaneous)	2008	Q1
Medicine (miscellaneous)	2009	Q1
Medicine (miscellaneous)	2010	Q1
Medicine (miscellaneous)	2011	Q1
Medicine (miscellaneous)	2012	Q1
Medicine (miscellaneous)	2013	Q1
Medicine (miscellaneous)	2014	Q1
Medicine (miscellaneous)	2015	Q1
Medicine (miscellaneous)	2016	Q1
Medicine (miscellaneous)	2017	Q1
Medicine (miscellaneous)	2018	Q1
Medicine (miscellaneous)	2019	Q1
Medicine (miscellaneous)	2020	Q2
Medicine (miscellaneous)	2021	Q1
Medicine (miscellaneous)	2022	Q1
Medicine (miscellaneous)	2023	Q1

SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
1999	0.468
2000	0.443
2001	0.455
2002	0.474
2003	0.607
2004	0.651
2005	0.778
2006	0.836
2007	0.873
2008	1.029
2009	0.909
2010	0.826
2011	0.843
2012	0.946
2013	1.040
2014	1.025
2015	1.079
2016	1.073
2017	1.102
2018	1.027
2019	0.876
2020	0.924
2021	1.086
2022	1.085
2023	1.016

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
1999	216
2000	242
2001	323
2002	253
2003	285
2004	322
2005	311
2006	430
2007	396
2008	352
2009	388
2010	391
2011	428
2012	398
2013	380
2014	402
2015	518
2016	376
2017	372
2018	502
2019	394
2020	555
2021	370
2022	327
2023	337

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	1999	1.190
Cites / Doc. (4 years)	2000	1.261
Cites / Doc. (4 years)	2001	1.377
Cites / Doc. (4 years)	2002	1.450
Cites / Doc. (4 years)	2003	1.804
Cites / Doc. (4 years)	2004	2.092
Cites / Doc. (4 years)	2005	2.321
Cites / Doc. (4 years)	2006	2.681
Cites / Doc. (4 years)	2007	2.809
Cites / Doc. (4 years)	2008	2.867
Cites / Doc. (4 years)	2009	2.676
Cites / Doc. (4 years)	2010	2.645
Cites / Doc. (4 years)	2011	2.610
Cites / Doc. (4 years)	2012	2.795
Cites / Doc. (4 years)	2013	2.929
Cites / Doc. (4 years)	2014	2.953
Cites / Doc. (4 years)	2015	2.965
Cites / Doc. (4 years)	2016	2.910
Cites / Doc. (4 years)	2017	2.961
Cites / Doc. (4 years)	2018	2.991
Cites / Doc. (4 years)	2019	2.877
Cites / Doc. (4 years)	2020	3.328
Cites / Doc. (4 years)	2021	4.847
Cites / Doc. (4 years)	2022	4.481
Cites / Doc. (4 years)	2023	4.203
Cites / Doc. (3 years)	1999	1.190
Cites / Doc. (3 years)	2000	1.185
Cites / Doc. (3 years)	2001	1.422
Cites / Doc. (3 years)	2002	1.516
Cites / Doc. (3 years)	2003	1.851
Cites / Doc. (3 years)	2004	2.114
Cites / Doc. (3 years)	2005	2.385
Cites / Doc. (3 years)	2006	2.716
Cites / Doc. (3 years)	2007	2.764
Cites / Doc. (3 years)	2008	2.903
Cites / Doc. (3 years)	2009	2.691
Cites / Doc. (3 years)	2010	2.449
Cites / Doc. (3 years)	2011	2.520
Cites / Doc. (3 years)	2012	2.920
Cites / Doc. (3 years)	2013	3.023
Cites / Doc. (3 years)	2014	2.893
Cites / Doc. (3 years)	2015	2.981
Cites / Doc. (3 years)	2016	2.970
Cites / Doc. (3 years)	2017	2.954
Cites / Doc. (3 years)	2018	2.996
Cites / Doc. (3 years)	2019	2.738
Cites / Doc. (3 years)	2020	3.425
Cites / Doc. (3 years)	2021	5.256
Cites / Doc. (3 years)	2022	4.908
Cites / Doc. (3 years)	2023	4.173
Cites / Doc. (2 years)	1999	0.953
Cites / Doc. (2 years)	2000	1.115
Cites / Doc. (2 years)	2001	1.426
Cites / Doc. (2 years)	2002	1.458
Cites / Doc. (2 years)	2003	1.814
Cites / Doc. (2 years)	2004	2.067
Cites / Doc. (2 years)	2005	2.283
Cites / Doc. (2 years)	2006	2.610
Cites / Doc. (2 years)	2007	2.721
Cites / Doc. (2 years)	2008	2.901
Cites / Doc. (2 years)	2009	2.384
Cites / Doc. (2 years)	2010	2.293
Cites / Doc. (2 years)	2011	2.614
Cites / Doc. (2 years)	2012	2.965
Cites / Doc. (2 years)	2013	2.834
Cites / Doc. (2 years)	2014	2.851
Cites / Doc. (2 years)	2015	2.978
Cites / Doc. (2 years)	2016	2.912
Cites / Doc. (2 years)	2017	2.945
Cites / Doc. (2 years)	2018	2.801
Cites / Doc. (2 years)	2019	2.649
Cites / Doc. (2 years)	2020	3.541
Cites / Doc. (2 years)	2021	6.161
Cites / Doc. (2 years)	2022	5.098
Cites / Doc. (2 years)	2023	3.341

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	1999	44
Self Cites	2000	30
Self Cites	2001	79
Self Cites	2002	73
Self Cites	2003	84
Self Cites	2004	104
Self Cites	2005	108
Self Cites	2006	115
Self Cites	2007	135
Self Cites	2008	126
Self Cites	2009	143
Self Cites	2010	145
Self Cites	2011	171
Self Cites	2012	188
Self Cites	2013	177
Self Cites	2014	180
Self Cites	2015	233
Self Cites	2016	172
Self Cites	2017	154
Self Cites	2018	175
Self Cites	2019	150
Self Cites	2020	172
Self Cites	2021	148
Self Cites	2022	113
Self Cites	2023	111
Total Cites	1999	772
Total Cites	2000	762
Total Cites	2001	937
Total Cites	2002	1184
Total Cites	2003	1514
Total Cites	2004	1820
Total Cites	2005	2051
Total Cites	2006	2493
Total Cites	2007	2938
Total Cites	2008	3301
Total Cites	2009	3170
Total Cites	2010	2782
Total Cites	2011	2850
Total Cites	2012	3525
Total Cites	2013	3679
Total Cites	2014	3489
Total Cites	2015	3517
Total Cites	2016	3861
Total Cites	2017	3829
Total Cites	2018	3793
Total Cites	2019	3423
Total Cites	2020	4343
Total Cites	2021	7627
Total Cites	2022	6474
Total Cites	2023	5225

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	1999	1.122
External Cites per document	2000	1.138
External Cites per document	2001	1.302
External Cites per document	2002	1.423
External Cites per document	2003	1.748
External Cites per document	2004	1.993
External Cites per document	2005	2.259
External Cites per document	2006	2.590
External Cites per document	2007	2.637
External Cites per document	2008	2.792
External Cites per document	2009	2.570
External Cites per document	2010	2.321
External Cites per document	2011	2.369
External Cites per document	2012	2.765
External Cites per document	2013	2.878
External Cites per document	2014	2.744
External Cites per document	2015	2.783
External Cites per document	2016	2.838
External Cites per document	2017	2.836
External Cites per document	2018	2.858
External Cites per document	2019	2.618
External Cites per document	2020	3.289
External Cites per document	2021	5.154
External Cites per document	2022	4.823
External Cites per document	2023	4.085
Cites per document	1999	1.190
Cites per document	2000	1.185
Cites per document	2001	1.422
Cites per document	2002	1.516
Cites per document	2003	1.851
Cites per document	2004	2.114
Cites per document	2005	2.385
Cites per document	2006	2.716
Cites per document	2007	2.764
Cites per document	2008	2.903
Cites per document	2009	2.691
Cites per document	2010	2.449
Cites per document	2011	2.520
Cites per document	2012	2.920
Cites per document	2013	3.023
Cites per document	2014	2.893
Cites per document	2015	2.981
Cites per document	2016	2.970
Cites per document	2017	2.954
Cites per document	2018	2.996
Cites per document	2019	2.738
Cites per document	2020	3.425
Cites per document	2021	5.256
Cites per document	2022	4.908
Cites per document	2023	4.173

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
1999	8.33
2000	11.98
2001	13.93
2002	11.07
2003	13.33
2004	13.98
2005	14.47
2006	11.16
2007	16.92
2008	17.61
2009	15.72
2010	15.86
2011	13.08
2012	13.82
2013	18.42
2014	18.66
2015	17.57
2016	19.68
2017	20.43
2018	13.35
2019	19.80
2020	15.86
2021	17.84
2022	14.07
2023	15.13

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	1999	42
Non-citable documents	2000	33
Non-citable documents	2001	31
Non-citable documents	2002	38
Non-citable documents	2003	39
Non-citable documents	2004	61
Non-citable documents	2005	66
Non-citable documents	2006	84
Non-citable documents	2007	103
Non-citable documents	2008	152
Non-citable documents	2009	188
Non-citable documents	2010	186
Non-citable documents	2011	170
Non-citable documents	2012	144
Non-citable documents	2013	141
Non-citable documents	2014	123
Non-citable documents	2015	121
Non-citable documents	2016	120
Non-citable documents	2017	101
Non-citable documents	2018	81
Non-citable documents	2019	60
Non-citable documents	2020	67
Non-citable documents	2021	85
Non-citable documents	2022	80
Non-citable documents	2023	72
Citable documents	1999	607
Citable documents	2000	610
Citable documents	2001	628
Citable documents	2002	743
Citable documents	2003	779
Citable documents	2004	800
Citable documents	2005	794
Citable documents	2006	834
Citable documents	2007	960
Citable documents	2008	985
Citable documents	2009	990
Citable documents	2010	950
Citable documents	2011	961
Citable documents	2012	1063
Citable documents	2013	1076
Citable documents	2014	1083
Citable documents	2015	1059
Citable documents	2016	1180
Citable documents	2017	1195
Citable documents	2018	1185
Citable documents	2019	1190
Citable documents	2020	1201
Citable documents	2021	1366
Citable documents	2022	1239
Citable documents	2023	1180

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	1999	327
Uncited documents	2000	294
Uncited documents	2001	273
Uncited documents	2002	325
Uncited documents	2003	281
Uncited documents	2004	293
Uncited documents	2005	291
Uncited documents	2006	234
Uncited documents	2007	253
Uncited documents	2008	260
Uncited documents	2009	303
Uncited documents	2010	301
Uncited documents	2011	288
Uncited documents	2012	269
Uncited documents	2013	257
Uncited documents	2014	273
Uncited documents	2015	256
Uncited documents	2016	299
Uncited documents	2017	295
Uncited documents	2018	278
Uncited documents	2019	287
Uncited documents	2020	215
Uncited documents	2021	278
Uncited documents	2022	251
Uncited documents	2023	243
Cited documents	1999	322
Cited documents	2000	349
Cited documents	2001	386
Cited documents	2002	456
Cited documents	2003	537
Cited documents	2004	568
Cited documents	2005	569
Cited documents	2006	684
Cited documents	2007	810
Cited documents	2008	877
Cited documents	2009	875
Cited documents	2010	835
Cited documents	2011	843
Cited documents	2012	938
Cited documents	2013	960
Cited documents	2014	933
Cited documents	2015	924
Cited documents	2016	1001
Cited documents	2017	1001
Cited documents	2018	988
Cited documents	2019	963
Cited documents	2020	1053
Cited documents	2021	1173
Cited documents	2022	1068
Cited documents	2023	1009