Exhibit 99.1

November 5, 2010

ReSearch Pharmaceutical Services, Inc.
Unaudited Quarterly Report for the period(s) ended September 30, 2010

ReSearch Pharmaceutical Services, Inc. (“RPS” or the “Company”), a leading provider of integrated clinical development outsourcing solutions to the biopharmaceutical industry, announces its results for the three and nine months ended September 30, 2010. These statements include unaudited comparative results for RPS for the three and nine months ended September 30, 2009.

In addition, RPS announces that it has today filed a Form 10-Q for the period ended September 30, 2010, as required by the Securities and Exchange Commission (“SEC”). A copy of the Form 10-Q is available on our website (www.rpsweb.com).

The following discussion of financial results for the three and nine months ended September 30, 2010 is qualified by reference to the unaudited financial results included in this press release and the Company’s Form 10-Q, as filed with the SEC.

Financial results for the three months ended September 30, 2010

	•		Service revenues for the third quarter of 2010 of $68.5 million grew $16.8 million or 32.5% as compared to the same period in 2009.
	•		Direct costs increased 31.4% to $48.8 million for the third quarter of 2010 from $37.1 million for the third quarter of 2009, but decreased as a percentage of service revenue to 71.2% from 71.8% between those periods.
	•		Selling, general, and administrative expenses increased 23.5% to $13.9 million for the third quarter of 2010 from $11.3 million for the third quarter of 2009, but decreased as a percentage of service revenue to 20.3% from 21.8% between those periods.
	•		EBITDA for the third quarter of 2010 of $5.6 million, or 8.2% of service revenues, increased from $3.2 million, or 6.1% of service revenues, for the third quarter of 2009.
	•		Income before provision for income taxes for the third quarter of 2010 of $4.4 million increased $2.2 million from $2.2 million for the third quarter of 2009. Net income for the third quarter of 2010 increased to $2.0 million, from net income for the third quarter in 2009 of $994,000.

Financial results for the nine months ended September 30, 2010

	•		Service revenues for the nine months ended September 30, 2010 of $190.9 million grew $45.5 million or 31.3% as compared to the same period in 2009.
	•		Direct costs increased 30.6% to $137.4 million for the nine months ended September 30, 2010 from $105.2 million for the same period in 2009, but decreased as a percentage of service revenue to 72.0% from 72.4% between those periods.
	•		Selling, general, and administrative expenses increased 22.3% to $39.6 million for the nine months ended September 30, 2010 from $32.4 million for the nine months ended September 30, 2009, but decreased as a percentage of service revenue to 20.7% from 22.3% between those periods.

November 5, 2010

	•		EBITDA for the nine months ended September 30, 2010 of $13.7 million, or 7.2% of service revenues, increased from $7.5 million, or 5.2% of service revenues, for the nine months ended September 30, 2009.
	•		Income before provision for income taxes for the nine months ended September 30, 2010 of $9.8 million increased $5.2 million from $4.6 million for the nine months ended September 30, 2009. Net income for the nine months ended September 30, 2010 increased $1.5 million to $3.5 million, from net income for the nine months ended September 30, 2009 of $2.0 million.

A description of each non-GAAP financial measure and the related reconciliation to the comparable GAAP measure are located at the end of this press release.

For further information please contact:

ReSearch Pharmaceutical Services, Inc.		+1 215 540 0700
Dan Perlman, Chief Executive Officer
Steven Bell, Chief Financial Officer

Background on RPS

Headquartered in Ft. Washington, Pennsylvania, with subsidiary offices across Latin America, Europe and Asia, RPS is a next generation CRO and a leading provider of integrated clinical development and enhanced full-service outsourcing solutions to the bio-pharmaceutical industry. RPS provides services in connection with the design, initiation and management of clinical trials programs that are required to obtain regulatory approval to market bio-pharmaceutical products. Our innovative business model combines the expertise of a traditional CRO with the ability to provide flexible outsourcing solutions that are fully integrated within our clients’ clinical drug development infrastructure. This approach was designed to meet the varied needs of small, medium and large bio-pharmaceutical companies.

Supplemental non-GAAP financial information

EBITDA is defined as net (loss) income before interest expense, income taxes and depreciation and amortization. The Company believes that net income is the most directly comparable GAAP measurement to EBITDA. EBITDA is presented because the Company believes it is useful to investors as widely accepted financial indicators of a company’s ability to service and/or incur indebtedness and because such disclosure provides investors with additional criteria used by the Company to evaluate our operating performance and in part, the performance-based compensation of certain of our employees. EBITDA is not defined under GAAP, should not be considered in isolation or as a substitute for a measure of our liquidity or performance prepared in accordance with GAAP and is not indicative of income from operations as determined under GAAP. EBITDA and other non-GAAP financial measures have limitations which should be considered before using these measures to evaluate the Company’s liquidity or financial performance. EBITDA does not include interest expense, income tax expense or depreciation and amortization expense, which may

November 5, 2010

be necessary in evaluating the Company’s operating results and liquidity requirements or those of businesses we may acquire. The Company’s management compensates for these limitations by using EBITDA as a supplement to GAAP results to provide a more comprehensive understanding of the factors and trends affecting our business or any business we may acquire. Our computation of EBITDA may not be comparable to other similarly titled measures provided by other companies, because not all companies calculate this measure in the same fashion.

The following table and related notes reconciles net income to EBITDA:

		(in thousands)								(in thousands)
		Three months ended								Nine months ended
		September 30,								September 30,
		2010				2009				2010				2009
Reconciliation of net income to EBITDA:
Net income		$	2,018			$	994			$	3,474			$	1,983
Provision for income taxes			2,384				1,162				6,336				2,654
Interest expense, net			163				120				596				329
Depreciation and amortization			1,077				884				3,279				2,555
EBITDA		$	5,642			$	3,160			$	13,685			$	7,521

November 5, 2010

Financial Data

ReSearch Pharmaceutical Services, Inc. and Subsidiaries
Consolidated Balance Sheets

		September 30,				December 31,
		2010				2009
		(unaudited)
Assets
Current assets:
Cash and cash equivalents		$	6,714,464			$	3,468,104
Restricted cash			8,604,235				5,195,841
Accounts receivable, less allowance for doubtful accounts of $616,000 at September 30, 2010 and $398,000 at December 31, 2009, respectively			67,898,655				54,516,875
Deferred tax asset			485,522				473,940
Prepaid expenses and other current assets			6,052,619				4,795,030
Total current assets		$	89,755,495			$	68,449,790
Property and equipment, net			6,074,599				6,404,747
Other assets			2,097,002				1,627,453
Intangible assets subject to amortization, net			1,769,304				2,792,481
Goodwill			15,801,828				16,742,614
Deferred tax asset			247,607				243,593
Total assets		$	115,745,835			$	96,260,678
Liabilities and stockholders’ equity
Current liabilities:
Accounts payable		$	4,644,897			$	3,526,931
Accrued expenses			13,148,937				14,551,527
Customer deposits			12,931,605				9,695,841
Deferred revenue			13,405,766				8,910,551
Line of credit			20,866,845				9,565,808
Deferred tax liability			44,267				44,267
Current portion of capital lease obligations			424,733				553,689
Total current liabilities		$	65,467,050			$	46,848,614
Deferred tax liability			316,133				345,121
Other liabilities			2,450,807				2,510,351
Capital lease obligations, less current portion			92,695				250,576
Total liabilities		$	68,326,685			$	49,954,662
Stockholders’ equity:
Common stock, $.0001 par value:
Authorized shares — 150,000,000 at September 30, 2010 and December 31, 2009, issued and outstanding shares — 37,264,215 and 37,277,808 at September 30, 2010 and December 31, 2009, respectively.			3,726				3,728
Additional paid-in capital			46,058,825				45,601,325
Accumulated other comprehensive (loss) income			(2,777,467	)			40,507
Retained earnings			4,134,066				660,456
Total stockholders’ equity		$	47,419,150			$	46,306,016
Total liabilities and stockholders’ equity		$	115,745,835			$	96,260,678

November 5, 2010

ReSearch Pharmaceutical Services, Inc. and Subsidiaries
Consolidated Statements of Income

		Three Months Ended September 30,								Nine Months Ended September 30,
		2010				2009				2010				2009
		(unaudited)								(unaudited)
Service revenue		$	68,452,843			$	51,669,235			$	190,862,040			$	145,374,471
Reimbursement revenue			7,891,037				5,588,148				23,391,018				16,528,476
Total revenue			76,343,880				57,257,383				214,253,058				161,902,947
Direct costs			48,764,108				37,112,160				137,410,803				105,199,316
Reimbursable out-of-pocket costs			7,891,037				5,588,148				23,391,018				16,528,476
Selling, general, and administrative expenses			13,926,625				11,279,779				39,597,805				32,370,791
Depreciation and amortization			1,076,869				884,177				3,278,637				2,554,806
Income from operations			4,685,241				2,393,119				10,574,795				5,249,558
Interest expense			(168,748	)			(170,179	)			(602,935	)			(473,945	)
Interest income			5,727				49,883				6,728				145,172
Other income (expense), net			(120,997	)			(116,623	)			(168,760	)			(283,725	)
Income before provision for income taxes			4,401,223				2,156,200				9,809,828				4,637,060
Provision for income taxes			2,383,609				1,162,167				6,336,218				2,654,298
Net income		$	2,017,614			$	994,033			$	3,473,610			$	1,982,762
Net income per common share:
Basic		$	0.05			$	0.03			$	0.09			$	0.05
Diluted		$	0.05			$	0.03			$	0.09			$	0.05
Weighted average number of common shares outstanding:
Basic			37,221,109				37,231,635				37,254,628				36,910,087
Diluted			38,645,276				38,141,116				38,445,792				37,955,539

November 5, 2010

NOTES

The functional currency of RPS is US dollars because that is the currency of the primary economic environment in which the Company operates. These financial statements are presented in US dollars.

The financial statements are presented in conformity with accounting principles generally accepted in the United States and have been prepared using the same accounting policies as set forth in the financial statements for the year ended December 31, 2009 which are included in the Company’s Annual Report on Form 10-K filed with the SEC.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This press release contains “forward-looking statements” that are made pursuant to the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. Forward-looking statements can be identified by words such as “anticipates,” “intends,” “plans,” “seeks,” “believes,” “estimates,” “expects” and similar references to future periods, or by the inclusion of forecasts or projections. Forward-looking statements are based on the Company’s current expectations and assumptions regarding its business, financial condition, the economy and other future conditions. Because forward-looking statements relate to the future, by their nature, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict, including those described under the heading “Risk Factors” in the Company’s Form 10-K filed with the SEC on March 24, 2010, and the first quarter Form 10Q as filed on May 14 2010, the second quarter Form 10Q as filed on August 6, 2010, and the third quarter Form 10Q as filed on November 5, 2010. The Company’s actual results may differ materially from those contemplated by the forward-looking statements. The Company cautions you therefore that you should not rely on any of these forward-looking statements as statements of historical fact or as guarantees or assurances of future performance. Important factors that could cause actual results to differ materially from those in the forward-looking statements include regional, national or global political, economic, business, competitive, market and regulatory conditions including: our ability to identify liabilities associated with the Company; our ability to manage pricing and operational risks; our ability to manage foreign operations and integrate new operations into our existing operations; changes in technology; and our ability to acquire or renew contracts. Any forward-looking statement made in this document speaks only as of the date on which it is made. Factors or events that could cause the Company’s actual results to differ may emerge from time to time, and it is not possible for the Company to predict all of them. The Company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future developments or otherwise, unless otherwise required to do so by law or regulation.