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Related Party Transactions (Details Narrative) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Accounts payable - related parties $ 7,255us-gaap_AccountsPayableRelatedPartiesCurrent $ 44,219us-gaap_AccountsPayableRelatedPartiesCurrent
Officers and Directors [Member] | Consulting fees [Member]    
Fees paid or due to related party 168,175us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= rcar_OfficersandDirectorsMember
/ us-gaap_TitleOfIndividualAxis
= rcar_ConsultingfeesMember
49,097us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= rcar_OfficersandDirectorsMember
/ us-gaap_TitleOfIndividualAxis
= rcar_ConsultingfeesMember
Directors [Member] | Legal Fee [Member]    
Fees paid or due to related party 156,175us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
/ us-gaap_TitleOfIndividualAxis
= rcar_LegalFeeMember
165,591us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
/ us-gaap_TitleOfIndividualAxis
= rcar_LegalFeeMember
Officer [Member] | Management Fee [Member]    
Fees paid or due to related party $ 0us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_OfficerMember
/ us-gaap_TitleOfIndividualAxis
= rcar_FeeMember
$ 30,567us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_OfficerMember
/ us-gaap_TitleOfIndividualAxis
= rcar_FeeMember