| | | | | | | | |
| Quidel Diagnostics India Private Ltd. | | India |
| Ortho Clinical Diagnostics India Private Limited | | India |
| Quidel Ireland Limited | | Ireland |
| Quidel Italy S.r.l. | | Italy |
| Ortho-Clinical Diagnostics Italy S.r.l. | | Italy |
| Ortho-Clinical Diagnostics K.K. | | Japan |
| Ortho-Clinical Diagnostics Luxembourg S.a.r.l. | | Luxembourg |
| Ortho-Clinical Diagnostics S.a.r.l. | | Luxembourg |
| Ortho-Clinical Diagnostics Holdings Luxembourg S.a.r.l. | | Luxembourg |
| Ortho-Clinical Diagnostics FinCo S.a.r.l. | | Luxembourg |
| BioHelix Corporation | | Massachusetts, United States |
| Ortho-Clinical Diagnostics Mexico Operations S. de R.L. de C.V. | | Mexico |
| Ortho-Clinical Diagnostics Mexico Services S. de R.L. de C.V. | | Mexico |
| OCD Investment Holdings B.V. | | Netherlands |
| Ortho-Clinical Diagnostics Netherlands B.V. | | Netherlands |
| Ortho-Clinical Diagnostics NV (Dutch branch) | | Netherlands |
| Ortho-Clinical Diagnostics FinCo S.a.r.l. (US branch) | | New York, United States |
| Ortho-Clinical Diagnostics, Inc. | | New York, United States |
| Ortho-Clinical Diagnostics Australia Pty Ltd. (New Zealand branch) | | New Zealand |
| Ortho-Clinical Diagnostics Norway (branch of Ortho-Clinical Diagnostics Netherlands B.V.) | | Norway |
| Diagnostic Hybrids, Inc. | | Ohio, United States |
| Ortho-Clinical Diagnostics Panama S.A. | | Panama |
| Ortho-Clinical Diagnostics Panama Export S.A. | | Panama |
| Ortho-Clinical Diagnostics Philippines Inc. | | Philippines |
| OCD Clinical Diagnostics Portugal, Unipessoal Lda | | Portugal |
| Ortho-Clinical Diagnostics Netherlands B.V. (Puerto Rico branch) | | Puerto Rico |
| Ortho-Clinical Diagnostics Limited Liability Company | | Russia |
| Branch of Ortho-Clinical Diagnostics Netherlands B.V. (Saudi Arabia branch) | | Saudi Arabia |
| QuidelOrtho Regional Headquarters Company | | Saudi Arabia |
| Ortho-Clinical Diagnostics Singapore Pte. Ltd. | | Singapore |
| Ortho-Clinical Diagnostics Singapore Pte., Ltd, Korea branch | | South Korea |
| Ortho-Clinical Diagnostics Spain, S.L. | | Spain |
| Ortho-Clinical Diagnostics Sweden AB | | Sweden |
| Ortho-Clinical Diagnostics Switzerland GmbH | | Switzerland |
| Ortho-Clinical Diagnostics GmbH (Swiss branch) | | Switzerland |
| Ortho-Clinical Diagnostics (Thailand) Ltd. | | Thailand |
| QuidelOrtho Health Operational Services Limited Company | | Turkey |
| Quidel UK Limited | | United Kingdom |
| Ortho Clinical Diagnostics Holdings Limited | | United Kingdom |
| Crimson OCD (UK) Limited | | United Kingdom |
| Ortho-Clinical Diagnostics | | United Kingdom |
