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</LabelSeparator><Level>2</Level><ElementName>us-gaap_BasisOfAccountingPolicyPolicyTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="From2013-01-01to2013-06-30" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;p style="font: 11pt/normal Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;font style="font-size: 10pt"&gt;We
are a medical device company with expertise in advanced skin permeation technology.&amp;#160;&amp;#160;We are developing our
Symphony&lt;/font&gt;&lt;font style="font-size: 7pt"&gt;&amp;#174;&lt;/font&gt;&lt;font style="font-size: 10pt"&gt; CGM System (&amp;#147;Symphony&amp;#148;) as
a non-invasive, wireless continuous glucose monitoring (&amp;#147;CGM&amp;#148;) system for use in hospital critical care units and
for people with diabetes.&amp;#160;&amp;#160;The Prelude&lt;/font&gt;&lt;font style="font-size: 7pt"&gt;&amp;#174;&lt;/font&gt;&lt;font style="font-size: 10pt"&gt;&lt;b&gt;&amp;#160;&lt;/b&gt;SkinPrep
System (&amp;#147;Prelude&amp;#148;), a component of our Symphony CGM System, allows for enhanced skin permeation that will enable
extraction of analytes such as glucose.&amp;#160;&amp;#160;Prelude&amp;#146;s platform skin preparation technology also allows for
needle-free, transdermal drug delivery. Additional applications for needle-free analyte extraction and topical and systemic
drug delivery are planned.&lt;/font&gt;&lt;/p&gt;

&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 9pt"&gt;&amp;#160;The accompanying
unaudited consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary, Sontra Medical,
Inc., a Delaware corporation. All significant intercompany balances and transactions have been eliminated in consolidation.&amp;#160;&amp;#160;These
financial statements have been prepared in conformity with generally accepted accounting principles (&amp;#147;GAAP&amp;#148;) in the
United States consistent with those applied in, and should be read in conjunction with, the Company&amp;#146;s audited consolidated
financial statements and related footnotes for the year ended December 31, 2012 included in the Company&amp;#146;s Annual Report on
Form 10-K as filed with the United States Securities and Exchange Commission (&amp;#147;SEC&amp;#148;) on March 18, 2013.&amp;#160;&amp;#160;These
financial statements reflect all adjustments, consisting only of normal recurring adjustments, which are, in the opinion of management,
necessary for a fair presentation of the Company&amp;#146;s financial position as of June 30, 2013 and its results of operations and
cash flows for the interim periods presented and are not necessarily indicative of results for subsequent interim periods or for
the full year.&amp;#160;&amp;#160;These interim financial statements do not include all of the information and footnotes required by GAAP
for complete financial statements and allowed by the relevant SEC rules and regulations; however, the Company believes that its
disclosures are adequate to ensure that the information presented is not misleading. Certain amounts in prior periods have been
reclassified to conform to current presentation.&lt;/p&gt;

&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;

&lt;p style="font: 10pt/normal Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 9pt"&gt;&amp;#160;On June 7, 2013,
the Company effected a 1-for-10 reverse stock split of its common stock. All share and per share information has been retroactively
restated to reflect this reverse stock split.&lt;/p&gt;

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