<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-06-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001449349</issuerCik>
        <issuerName>ADVANCED MEDICAL ISOTOPE Corp</issuerName>
        <issuerTradingSymbol>ADMD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001486807</rptOwnerCik>
            <rptOwnerName>Cadwell Carlton M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6208 W OKANOGAN AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>KENNEWICK</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>99336</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2011-06-17</value>
            </transactionDate>
            <transactionCoding>
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                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
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            </securityTitle>
            <transactionDate>
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            </transactionCoding>
            <transactionTimeliness>
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            </transactionTimeliness>
            <transactionAmounts>
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                </transactionShares>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

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            <exerciseDate>
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            <expirationDate>
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            <underlyingSecurity>
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                <underlyingSecurityShares>
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                    <footnoteId id="F3"/>
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            <ownershipNature>
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            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
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            <expirationDate>
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            <exerciseDate>
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            <expirationDate>
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            <underlyingSecurity>
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            <expirationDate>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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            <exerciseDate>
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            <expirationDate>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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            <exerciseDate>
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            <expirationDate>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                <underlyingSecurityShares>
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            <expirationDate>
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            <underlyingSecurity>
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                <underlyingSecurityShares>
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            <expirationDate>
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            <underlyingSecurity>
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            <exerciseDate>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.3</value>
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            <exerciseDate>
                <value>2011-01-12</value>
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            <expirationDate>
                <value>2013-01-12</value>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock Option</value>
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            <exerciseDate>
                <value>2008-11-26</value>
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            <expirationDate>
                <value>2011-11-26</value>
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            <underlyingSecurity>
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        <derivativeHolding>
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                <value>0.22</value>
                <footnoteId id="F2"/>
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            <exerciseDate>
                <value>2011-06-09</value>
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            <expirationDate>
                <value>2014-06-09</value>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
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                    <footnoteId id="F3"/>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
                    <value>0.21</value>
                </transactionPricePerShare>
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                    <value>A</value>
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            <exerciseDate>
                <value>2011-06-17</value>
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            <expirationDate>
                <value>2014-06-17</value>
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            <underlyingSecurity>
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                <underlyingSecurityShares>
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                    <footnoteId id="F3"/>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Convertible Debt</value>
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            <conversionOrExercisePrice>
                <value>0.21</value>
                <footnoteId id="F2"/>
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            <transactionDate>
                <value>2011-06-30</value>
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                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>480313</value>
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                <transactionPricePerShare>
                    <value>0.21</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <value>2011-06-30</value>
            </exerciseDate>
            <expirationDate>
                <value>2014-06-30</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>480313</value>
                    <footnoteId id="F3"/>
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                    <footnoteId id="F3"/>
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            <ownershipNature>
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                    <value>D</value>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Includes shares of which Mr. Cadwell has direct beneficial ownership held in the name of Cadwell Industries, Cadwell Vista Field, Cadwell &amp; Cadwell, Cadwell Trustee Sara, Cadwell Trustee Ryan, Cadwell Cust Sara.</footnote>
        <footnote id="F2">Conversion price as computed on 06/30/2011.</footnote>
        <footnote id="F3">Number of shares based on principal of note and imputed interest as of 06/30/2011.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Carlton M. Cadwell</signatureName>
        <signatureDate>2011-07-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
