Exhibit 99.1

LOGO

FOR RELEASE 4:00 PM EASTERN

TUESDAY, MAY 5, 2015

CONTACTS:


Investor Relations		Media Relations
John Bakewell		Meara Murphy
978-436-7073		978-671-8508

Lantheus Medical Imaging Reports 2015 First Quarter

Financial Results

First quarter Adjusted EBITDA increases 29% to $20.6 million

DEFINITY^® revenue increases 15%, growing sequentially for the eleventh consecutive quarter

No. BILLERICA, Mass. (May 5, 2015) – Lantheus Medical Imaging, Inc. (“Lantheus” or “the Company”), a wholly-owned operating subsidiary of parent company Lantheus Holdings, Inc. and a global leader in developing, manufacturing, selling and distributing innovative diagnostic imaging agents and products, today reported financial results for its first quarter ended March 31, 2015.

Worldwide revenue for the first quarter of 2015 totaled $74.8 million, representing a 2% increase as-reported and a 4% increase on a constant-currency basis over $73.3 million reported for the first quarter of 2014.

The Company reported quarterly GAAP-earnings profitability during the first quarter of 2015 with net income totaling $700,000, an improvement of nearly $2.0 million over a net loss of $1.3 million reported for the first quarter of 2014.

Net income for the first quarter of 2015 included $3.6 million of non-cash costs associated with the Company’s previously announced campus consolidation initiative. The Company’s first quarter 2015 net income, as adjusted for the above items, totaled $4.3 million, an improvement of $5.6 million, compared to a net loss of $1.3 million for the first quarter of 2014. The attached financial tables include a reconciliation of U.S. GAAP to as-adjusted results.

The Company’s first quarter Adjusted EBITDA, as defined in the GAAP to non-GAAP reconciliation provided later in this release, was $20.6 million, increasing by 29% from $16.0 million in the same quarter of the prior year.

Jeff Bailey, President and CEO commented, “We delivered a strong start to 2015, as reflected in our first quarter results. We are pleased once again with the continued strength of DEFINITY, which now has grown sequentially every quarter since mid-2012, driven by our ongoing efforts to expand the appropriate use of contrast in cardiac echo procedures. Our first quarter performance also reflects lower sales volumes but higher average selling prices and some mix shift in one customer channel, driven by a change in contract status. While we anticipate that the benefit of this change will moderate in future quarters, we are nonetheless pleased with its contribution to our strong start to 2015.”

Mr. Bailey continued, “Further contributing to our strong Q1 performance, our operating expense levels, as adjusted, declined versus the year-ago period, reflecting our continued efforts to improve operating efficiency and resulting in 190 basis points of margin improvement, as adjusted, versus the year-ago quarter. Altogether, we delivered first quarter Adjusted EBITDA of $20.6 million and free cash flow of $11.7 million for an excellent start to 2015. Looking ahead to the rest of the year, our efforts will continue to focus on initiatives that strengthen our business and improve our operating model while meeting the needs of the customers we serve.”

Conference Call

As previously announced, the Company will host a conference call starting at 4:30 p.m. (Eastern Time) today. To access the live conference call via telephone, please dial 1-866-498-8390 (U.S. callers) or 1-678-509-7599 (international callers) and provide passcode 30201918. A live audio webcast of the call also will be available on the homepage of the Company’s website at www.lantheus.com. A replay of the telephone conference call and audio webcast will be available from approximately 8:30 p.m. ET on May 5, 2015 through midnight on May 19, 2015. To access a replay of the conference call, dial 1-855-859-2056 (U.S. callers) or 1-404-537-3406 (international callers), and provide passcode 30201918. A replay of this conference call will also be available in the Investor Relations section of our website located at www.lantheus.com.

The conference call may include a discussion of non-GAAP financial measures. Reference is made to the most directly comparable GAAP financial measures, the reconciliation of the differences between the two financial measures, and the other information included in this press release, our Form 8-K filed with the SEC today, or otherwise available in the Investor Relations section of our website located at www.lantheus.com.

Non-GAAP Financial Measures

The Company uses non-GAAP financial measures, such as net sales excluding the impact of foreign currency, net income, as adjusted, EBITDA and Adjusted EBITDA. The Company’s management believes that the presentation of these measures provides useful information to investors. These measures may assist investors in evaluating the Company’s operations, period over period. The measures may exclude such items which may be highly variable, difficult to predict and of a size that could have substantial impact on the Company’s reported results of operations for a period. Management uses these and other non-GAAP measures internally for evaluation of the performance of the business, including the allocation of resources and the evaluation of results relative to employee performance compensation targets. Investors should consider these non-GAAP measures only as a supplement to, not as a substitute for or as superior to, measures of financial performance prepared in accordance with GAAP.

Safe Harbor for Forward-Looking and Cautionary Statements

This press release contains forward-looking statements. Such forward-looking statements are subject to risks and uncertainties that may be described from time to time in the Company’s filings with the Securities and Exchange Commission. Readers are cautioned not to place undue reliance on the forward-looking statements contained herein, which speak only as of the date hereof. The Company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by law.

About Lantheus Medical Imaging, Inc. and Lantheus Holdings, Inc.

Lantheus Medical Imaging, Inc., a wholly-owned operating subsidiary of parent company, Lantheus Holdings, Inc., is a global leader in developing, manufacturing, selling and distributing innovative diagnostic imaging agents and products. Lantheus provides a broad portfolio of products, which are primarily used for the diagnosis of cardiovascular diseases. Key products include the echocardiography contrast agent DEFINITY^® Vial for (Perflutren Lipid Microsphere) Injectable Suspension; TechneLite^® (Technetium Tc99m Generator), a technetium-based generator that provides the essential medical isotope used in nuclear medicine procedures; and Xenon Xe 133 Gas (Xenon 133), an inhaled radiopharmaceutical imaging agent used to evaluate pulmonary function and for imaging the lungs.

Lantheus has more than 500 employees worldwide with headquarters in North Billerica, Massachusetts, and offices in Puerto Rico, Canada and Australia.

– Tables Follow –

Lantheus MI Intermediate, Inc. and subsidiaries

Consolidated Statements of Operations

(dollars in thousands – unaudited)


	Three Months Ended March 31,
	2015			2014
Revenues	$	74,823		$	73,336
Cost of goods sold		39,054			43,275

Gross profit		35,769			30,061
Operating expenses:
Sales and marketing expenses		9,072			9,498
General and administrative expenses		8,841			8,852
Research and development expenses		6,196			3,222

Total operating expenses		24,109			21,572
Operating income		11,660			8,489
Interest expense, net		(10,623	)		(10,552	)
Other expense, net		(383	)		(414	)

Income (loss) before income taxes		654			(2,477	)
Benefit for income taxes		(3	)		(1,192	)

Net income (loss)	$	657		$	(1,285	)

Lantheus MI Intermediate, Inc. and subsidiaries

Consolidated Revenue Analysis

(dollars in thousands – unaudited)


	Three Months Ended March 31,
	2015		2014		% change
U.S.
DEFINITY		25,182		21,984		14.5	%
TechneLite		18,173		20,100		(9.6	)%
Xenon		13,186		9,705		35.9	%
Other		4,126		5,022		(17.8	)%

Total U.S.	$	60,667	$	56,811		6.8	%

International
DEFINITY		484		375		29.1	%
TechneLite		2,687		2,941		(8.6	)%
Xenon		8		4		100.0	%
Other		10,977		13,205		(16.9	)%

Total International	$	14,156	$	16,525		(14.3	)%

Worldwide
DEFINITY		25,666		22,359		14.8	%
TechneLite		20,860		23,041		(9.5	)%
Xenon		13,194		9,709		35.9	%
Other		15,103		18,227		(17.1	)%

Total Revenues	$	74,823	$	73,336		2.0	%

Lantheus MI Intermediate, Inc. and subsidiaries

Supplemental Revenue Information

(unaudited)


	March 31, 2015 Quarter to Date Revenue Growth/(Decline)
	Domestic As Reported			Int’l Constant Currency			Int’l As Reported			Total Constant Currency			Total As Reported
Products
DEFINITY		15	%		46	%		29	%		15	%		15	%
TechneLite		(10	)%		0	%		(9	)%		(8	)%		(9	)%
Xenon		36	%		122	%		100	%		36	%		36	%
Other		(18	)%		(9	)%		(17	)%		(12	)%		(17	)%

Total Revenues		7	%		(6	)%		(14	)%		4	%		2	%

Lantheus MI Intermediate, Inc. and subsidiaries

Reconciliation of Revenues to Revenues Excluding the Impact of Foreign Currency

(dollars in thousands – unaudited)


	Three Months Ended March 31, 2015
	International Revenues		Total Revenues
Revenues, as reported	$	14,156	$	74,823
Currency impact as compared to prior period		1,307		1,307

Revenues, excluding the impact of foreign currency	$	15,463	$	76,130

Lantheus MI Intermediate, Inc. and subsidiaries

Reconciliation of As Reported Results to Non-GAAP Financial Measures

(dollars in thousands – unaudited)


	Three Months Ended March 31,
	2015			2014
Net Income (loss)
Net income (loss), as reported	$	657		$	(1,285	)
Reconciling items impacting
Gross Profit:
Campus Consolidation Costs		77			—
Reconciling items impacting
Operating Expenses:
Campus Consolidation Costs		3,553			—

Net income (loss), as adjusted	$	4,287		$	(1,285	)

Net income (loss), as adjusted, as a percentage of revenues		5.7	%		(1.8	)%

Lantheus MI Intermediate, Inc. and subsidiaries

Reconciliation of As Reported Results to Non-GAAP Financial Measures

(dollars in thousands – unaudited)


	Three Months Ended March 31,
	2015			2014
EBITDA
Net income (loss), as reported	$	657		$	(1,285	)
Interest expense, net		10,623			10,552
Provision (benefit) for income taxes		1			(1,017	)
Depreciation		5,688			2,214
Amortization of intangible assets		1,896			2,302

EBITDA		18,865			12,766
Reconciling items impacting
EBITDA:
Non-cash stock-based compensation		277			284
Legal fees relating to business interruption claim		17			234
Asset write-off		180			420
Severance and recruiting costs		97			85
Sponsor fee and other		289			251
New manufacturer costs		862			1,978

Adjusted EBITDA	$	20,587		$	16,018

Adjusted EBITDA as a percentage of revenues		27.5	%		21.8	%

Lantheus MI Intermediate, Inc. and subsidiaries

Reconciliation of Free Cash Flow

(dollars in thousands – unaudited)


	Three Months Ended
	March 31, 2015			March 31, 2014
Net cash provided by (used in) operating activities	$	15,157		$	(15	)
Capital expenditures		(3,498	)		(1,482	)

Free cash flow	$	11,659		$	(1,497	)

Lantheus MI Intermediate, Inc. and subsidiaries

Condensed Consolidated Balance Sheets

(dollars in thousands – unaudited)


	March 31, 2015			December 31, 2014
Assets
Current assets:
Cash and cash equivalents	$	28,821		$	17,817
Accounts receivable, net		38,401			41,540
Inventory		16,153			15,582
Income tax receivable		157			247
Deferred tax assets		255			256
Other current assets		4,795			3,739

Total current assets		88,582			79,181
Property, plant and equipment, net		92,102			96,014
Capitalized software development costs, net		2,268			2,421
Intangibles, net		25,582			27,191
Goodwill		15,714			15,714
Deferred financing costs		6,668			7,349
Deferred tax assets		334			328
Other long-term assets		17,486			19,318

Total assets	$	248,736		$	247,516

Liabilities and stockholder’s deficit
Current liabilities:
Line of credit	$	8,000		$	8,000
Accounts payable		13,053			15,665
Accrued expenses and other liabilities		29,876			24,579
Deferred tax liability		148			152
Deferred revenue		129			132

Total current liabilities		51,206			48,528
Asset retirement obligation		7,373			7,435
Long-term debt, net		399,348			399,280
Deferred tax liability		246			247
Other long-term liabilities		31,106			32,995

Total liabilities		489,279			488,485

Stockholder’s deficit		(240,543	)		(240,969	)

Total liabilities and stockholder’s deficit	$	248,736		$	247,516

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Lantheus Medical Imaging, Inc. 8-K