Revenues by market
Revenue from the biopharma/pharma market decreased by $1.6 million, or 3.3%, from $48.6 million to $47.0 million for the three months ended September 30, 2023, as compared to the same period in 2022. Revenue was impacted by decreased demand for cryogenic systems, particularly in China, where product revenues through direct and indirect channels decreased by $3.5 million, or 77%, clinical trial start delays; and slower than expected ramps of products from certain clients. This was partially offset by the support of commercially launched therapies and demand for our bioservices solutions, which increased by 54.3% to $6.6 million and 26.1% to $3.4 million, respectively, for the three months ended September 30, 2023 as compared to the same period in 2022. We now support 670 clinical trials, of which 516 trials are in the Americas, 112 are in EMEA and 42 are in APAC, compared to 643 clinical trials supported as of September 30, 2022 (496 in the Americas, 105 in EMEA and 42 in APAC). The number of Phase 3 clinical trials supported was 81 trials as of September 30, 2023, of which 57 were in the Americas, 22 in EMEA, and 2 in APAC. This compares to 80 Phase 3 trials (58 in the Americas, 20 in EMEA and 2 in APAC) supported as of September 30, 2022. The activity in the clinical trial space, particularly in the Cell and Gene Therapy market is expected to drive future revenue growth as these clinical trials advance and resulting therapies are commercialized on a global basis.
Our revenue from the animal health market decreased by $2.7 million, or 28.5%, from $9.6 million to $6.9 million for the three months ended September 30, 2023, as compared to the same period in 2022. This decrease was a result of weaker than expected demand for cryogenic systems from breeders.
Revenues in the reproductive medicine market remained flat for the three months ended September 30, 2023, as compared to the same period in 2022. In April 2023, Cryoport signed a three-year agreement with Boston IVF, a fertility treatment provider. Utilizing Cryoport's end-to-end supply chain solutions, Boston IVF plans to integrate its regional and satellite labs across the United States. In addition, in June 2023, Cryoport was selected by IVFAustralia as its exclusive supply chain solutions partner for its global reproductive material shipments.
Gross margin and cost of revenues. Gross margin for the three months ended September 30, 2023 was 43.2% of total revenues, as compared to 43.7% of total revenues for the three months ended September 30, 2022. Cost of total revenues decreased $2.2 million to $31.9 million for the three months ended September 30, 2023, as compared to $34.0 million in the same period in 2022, as a result of the decrease in revenue over the prior year.
Gross margin for our service revenues was 42.2% of service revenues, as compared to 43.2% of service revenues for the three months ended September 30, 2022. Our cost of revenues is primarily comprised of freight charges, payroll and associated expenses related to our global logistics and supply chain centers, depreciation expenses of our Cryoport Express® Shippers and supplies and consumables used for our solutions.
Gross margin for our product revenues was 44.9% of product revenues, as compared to 44.3% of product revenues for the three months ended September 30, 2022. Product revenues, related cost of revenues and resulting gross margins were primarily driven by our MVE Biological Solutions business. Our cost of product revenues were primarily comprised of materials, direct and indirect labor, inbound freight charges, purchasing and receiving, inspection, and distribution and warehousing of inventory. In addition, shop supplies, facility maintenance costs and depreciation expense for assets used in the manufacturing process were included in cost of product revenues.
Selling, general and administrative expenses. Selling, general and administrative (“SG&A”) expenses include the costs associated with selling our services and products, costs required to support our marketing efforts including legal, accounting, patent, and shareholder services, amortization of intangible assets and other administrative functions.
SG&A expenses increased by $5.8 million, or 19.2% as compared to the same period in 2022. This increase was driven by the further buildout of our competencies and infrastructure to support the continuing scaling of our business and demand for Cryoport’s systems and solutions and buildout of new competencies, such as the IntegriCellTM platform, a standardized integrated apheresis collection, cryopreservation and distribution solution for cell therapies for which Cryoport is currently building out two centers of excellence located in Houston, Texas, U.S. and Liège, Belgium which are expected to be fully operational and ready for validation during the second quarter of 2024. Wages and associated employee costs increased $4.1 million from $11.9 million in 2022 to $16.1 million in 2023. Facility and other overhead allocations increased $1.4 million, primarily driven by our facility expansions, depreciation and amortization increased $0.6 million, primarily due to additional fixed assets purchased or acquired in our recent business acquisitions and the launch of Cryoportal® 2 Logistics Management Platform, stock-based compensation expense increased $0.5 million. These