DIAGNÓSTICOS DA AMÉRICA S.A.

Publicly-Traded Company

NIRE 35.300.172.507

CNPJ/MF n.º 61.486.650/0001-83

MATERIAL FACT

DIAGNÓSTICOS DA AMÉRICA S.A. ("Company" or "DASA"), in addition to the material facts disclosed in the past days, informs that it has received, on March 7, 2014, the notice delivered by Cromossomo Participações II S.A. ("Offeror"), in connection with the ongoing tender offer, which is attached as an exhibit hereto.

DASA will keep its shareholders and the market informed of the developments in connection with the matters addressed in this material fact.

Barueri, March 10, 2014.

Paulo Bokel Catta-Preta Chief Investors Relations Officer

Exhibit to the Material Fact dated March 10, 2014

The content of this Exhibit does not constitute a manifestation of Diagnosticos da América S.A.

To Confidential

OIAGNOSTICOS DA AMÉRICA S.A. Jurua Avenue, No" 434.A!phav!l!e Postal Code 06455-01O - Barnerì, SP

Att.: MrsL Ulian Cristina Pacheco Ura

7 March 2014

Reference ls made to the va!untary tender offer for the acquisìtian of cammon shares issued by Diag:n6sticos da América KA", pub!ic-held company, with registered office ln the City of BaruerL State of Sào Paulo, at Juruà Avenue, No, 434, Alphaville, Postal Code: 06455-010, enrolled ""'h the Brazilian

legai Registry { Cadastro Nacional da Pessoa Jurfdica do Ministério da Fazenda)

("CNPJ/MF'') under No, 61A86,65010001-83 ("Company" or 'DASA") held by Cromossomo Participaçòes Il S.A., a Brazi!ian corporatian (socìedade por açOes) v,rith registered office in the City af SS:o Pau!o, State of Séo Paulo, at Joaquim Floriano Street, No. 413, floor 112 - part, ltaim BibL Postal Code: 04534-011, enrolled with !he CNPJIMf under No, 14,167,18810001-71, as offeror ("Offeror"), jointly with BTG f'ACTUAL CORRETORA DE TÌTULOS E VALORES MOB!LIAfliO$ SA, finenciel instltulion, with registered offìce in the Citj of Sio Pau!o" State of Slio Pau!o, at 8rìgadeiro Faria Lima Avenue, No. 3.477, i4*' ffoor - part enro!led with the CNPJ/MF under No. 43.815.158:0001 22, as 1ntermediary financ;al lnstitution, in accordance wtth artJc!tl 257 of Lav;No. 6,404 cf December 15:m. i97i.l as amended and VItti ìtems IV and l of artide 2°ct of RuHng No. 351. enacted by the Braziiian Securities and Exchange Commission Comissào de Vafores Mob!lf;Jtrios ( CVM'") of March Sw, 2002, as amended ("CVM Ru!lng: 361"), fcr the acquìsitlon cf up to the totality of common shares issued by DASA COffer"). as disclosed in the announcement of the Offer pub!ished on 23 December 2Q13 and amended on 3D January 2ù14 ( 'Announeement"}.

The Offeror hereby announces lhat 12 March 2014 ls lhe las!day of the thirty (30) day perlod following the auchon date in which the Offeror. in accordance with artide 32-A of CVM Ruling 361. acquires any outstanding stock, in the same conditlons of the Offer, at price per share of R$ 15.00, adjusted by the

officla!Brazilian inflation rate (IPCA indice de Preço ao Consumidor Ampio) pro rata from the date of the

auction untll the settlement date. The completion of the Offer vili occur within the ending of such period.

In add!tion, the Offeror informs that wiB send a new notice in order to dlsclose the equity interests held by
lts shareholders as soon as such is co:mp,leted,

We remain at your disposal far any further explanation or addltiona! comments you may require on the subject.

Regards,

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