Product revenues increased $1.4 million, or 5.3%, from $25.8 million to $27.2 million for the three months ended September 30, 2022, driven by the demand for MVE Biological Solutions’ portfolio of cryogenic stainless-steel freezers, aluminum dewars and related ancillary equipment used in the storage and transport of life sciences commodities, partially offset by the impact of the macroeconomic conditions described above, which we believe have curtailed capital expenditure for MVE Biological Solutions’ larger cryogenic systems and freezers toward smaller units.
Revenues by market
Revenue from the biopharma/pharma market increased $2.6 million, or 5.6%, from $46.0 million to $48.6 million for the three months ended September 30, 2022, as compared to the same period in 2021. This increase was driven by revenue growth from the support of global clinical trials and commercially launched therapies as well as general demand for our logistics and biostorage services. We now support 643 global clinical trials, of which 496 trials are in the Americas, 105 are in EMEA and 42 are in APAC, compared to 582 clinical trials supported as of September 30, 2021 (459 in the Americas, 92 in EMEA and 31 in APAC). As of September 30, 2022, we supported 80 Phase 3 clinical trials, of which 58 are in the Americas, 20 are in EMEA, and 2 are in APAC. This compares to 70 Phase 3 trials (48 in the Americas, 21 in EMEA and 1 in APAC) supported as of September 30, 2021. 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 increased $1.4 million, or 16.6%, from $8.3 million to $9.6 million for the three months ended September 30, 2022, as compared to the same period in 2021, as a result of an increased demand for MVE Biological Solutions’ cryogenic shipper suite.
Revenues in the reproductive medicine market decreased $0.2 million, or 6.8%, from $2.4 million to $2.3 million for the three months ended September 30, 2022, as compared to the same period in 2021. This decrease was driven by a decrease in demand for MVE Biological Solutions’ cryogenic freezer suite and partially offset by strong demand for our CryoStork® logistics solution.
Gross margin and cost of revenues. Gross margin for the three months ended September 30, 2022 was 43.7% of total revenues, as compared to 41.5% of total revenues for the three months ended September 30, 2021, up 222 basis points year over year. Cost of total revenues increased $0.9 million to $34.0 million for the three months ended September 30, 2022, as compared to $33.2 million in the same period in 2021.
Gross margin for our service revenues was 43.2% of service revenues, as compared to 41.4% of service revenues for the three months ended September 30, 2021, up 182 basis points year over year. 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 44.3% of product revenues, as compared to 41.6% of product revenues for the three months ended September 30, 2021, up 27 basis points year over year. Product revenues, related cost of revenues and resulting gross margins were primarily driven by our MVE Biological Solutions business. Our cost of product revenues was 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 products and services and costs required to support our marketing efforts including legal, accounting, patent, shareholder services, amortization of intangible assets and other administrative functions.
For the third quarter of 2022, SG&A expenses increased by $6.3 million, or 26.5% as compared to the third quarter of 2021. This increase is driven by the further build out of our competencies and infrastructure to support the continuing scaling of our business and demand for Cryoport’s systems and solutions, such as the two new global supply chain centers in Houston, Texas and Morris Plains, New Jersey for which grand openings were held in June 2022. Wages and associated employee costs increased $1.8 million from $10.1 million in 2021 to $11.9 million in 2022. Stock compensation expense increased by $1.0 million, facility costs and other overhead allocations increased by $1.0 million, which includes start-up costs related to our expansions in Houston, Texas and Morris Plains, New Jersey, and depreciation and amortization increased $0.5 million, primarily due to additional fixed assets purchased or acquired in our recent business acquisitions as compared to the same period in the prior year.