| 1970 |
Tokyo Special Reference Laboratories, Inc. is established. |
| 1982 |
Starts the clinical trial test business |
| 1983 |
SRL Tokyo Laboratories, Inc. (later in 1993,SRL Tokyo Medical) becomes a subsidiary |
| 1987 |
Receives accreditation from the College of American Pathologists (CAP) |
| 1988 |
JML, Inc. (later in 1997,SRL Nishi-Nihon, Inc.) becomes a subsidiary |
| 1989 |
The company name is changed to SRL |
| 1990 |
SRL is listed on the Second Section of Tokyo Stock Exchange |
| 1993 |
Taiyo Kosei Laboratories, Inc.(later SRL Hokuriku, Inc.) becomes a subsidiary |
| 1994 |
Nanshin Clinical Laboratories, Inc. becomes a subsidiary |
| 1995 |
Ogyu Clinical Laboratories, Inc. of Sapporo (later in 2000,SRL Hokkaido, Inc. ) becomes a subsidiary |
| 1997 |
SRL establishes SRL Teijin Bio, Inc. (current SRL Medisearch Inc., shareholding: 66.7%)
|
| 1998 |
SRL establishes SRL Shizuoka, Inc. |
| 1998 |
Teijin Bio Laboratories, Inc. (later in 2000, TSL, Inc.) joins the SRL Group |
| 2000 |
Life Information Analysis Center, Inc. becomes a subsidiary |
| 2000 |
Nihon Stery Inc. and Sumikin Sterile Kyushu Inc.( later in 2003, Kyusyu Stery Inc.) become subsidiaries |
| 2001 |
SRL is listed on the First Section of Tokyo Stock Exchange |
| 2002 |
Shionogi Medical Service Inc,(later in 2007,Shionogi Biomedical Laboratories,Inc)becomes a subsidiary |
| 2005 |
Two subsidiaries, SRL Tokyo Medical, Inc. and SBS, Inc. are merged into SRL |
| 2005 |
Miraca Holdings Inc. is established |
| 2006 |
Seven subsidiaries, SRL Hokkaido, Inc., TSL, Inc., Nanshin Clinical Laboratories, Inc., SRL Shizuoka, Inc., SRL Hokuriku, Inc., Life Information Analysis Center, Inc. and SRL Nishi-Nihon, Inc., are merged into SRL |
| 2008 |
SRL Kansai,Inc. is merged into SRL. |
| 2010 |
Japan Clinical Laboratories, Inc. becomes a subsidiary |
| 2011 |
Tsuchiya Enterprise, Inc.（later in 2012, HOKUSHIN Clinical Laboratory, Inc.) becomes a subsidiary |
| 2011 |
GUNMA Clinical-Laboratory Information Center Inc.(later in 2018,SRL KITAKANTO Laboratory Inc.) becomes a subsidiary |
| 2015 |
Accredited as a U.S. Clinical Laboratory Improvement Amendments (CLIA) laboratory |
| 2018 |
Introduced AI analysis in G-Banding chromosome testing |
| 2020 |
Miraca Holdings Inc. changes its name to H.U. Group Holdings Inc. |
| 2020 |
H.U. Group Holdings Inc. merges the sales divisions of SRL,Fujirebio,and Nihon Stery to establish H.U.Frontier Inc. |
| 2021 |
SAPPORO CLINICAL LABORATORY INC. and SRL,Inc. establish hereinafter the Testing Laboratory Joint Venture "SAPPORO MIRAI LABORATORY INC." and hereinafter the Collection & Logistics Joint Venture "SAPPORO MEDICARRY INC." |
| 2022 |
Launch of operation of the New Central Laboratory (H.U.Bioness Complex) |
| 2022 |
MEDIPAL HOLDINGS CORPORATION and H.U. Group Holdings Inc. establish Joint Venture Company "MEDISKET CORPORATION" in the Medical and Healthcare Fields |
| 2022 |
Tokyo Central Pathology Laboratory Inc. becomes a subsidiary |
| 2025 |
SRL Medisearch Inc. is merged into SRL |
| 2025 |
Integration of Three Companies in the Lab Testing and its related Services(LTS) Business |
