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Related Party Transactions (Details Narrative) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Accounts payable - related parties $ 19,615us-gaap_AccountsPayableRelatedPartiesCurrent   $ 7,255us-gaap_AccountsPayableRelatedPartiesCurrent
Officers and Directors [Member] | Consulting fees [Member]      
Fees paid or due to related party 6,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= rcar_OfficersandDirectorsMember
/ us-gaap_TitleOfIndividualAxis
= rcar_ConsultingfeesMember		 75,084us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= rcar_OfficersandDirectorsMember
/ us-gaap_TitleOfIndividualAxis
= rcar_ConsultingfeesMember		  
Directors [Member] | Legal Fee [Member]      
Fees paid or due to related party $ 38,980us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
/ us-gaap_TitleOfIndividualAxis
= rcar_LegalFeeMember		 $ 47,193us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
/ us-gaap_TitleOfIndividualAxis
= rcar_LegalFeeMember