Subsequent Events	6 Months Ended
Jun. 30, 2014
Subsequent Events [Abstract]
Subsequent Events	11. Subsequent Events On July 21, 2014, BioTime’s Chief Executive Officer, Michael D. West, and BioTime’ Senior Vice President, Chief Operating Officer, and Chief Financial Officer, Robert W. Peabody, exercised BioTime stock options to purchase 1,470,400 and 475,000 BioTime common shares, respectively, at an exercise price of $0.50 per share. Dr. West paid the exercise price of his options and a portion of his income tax withholding obligation through the delivery of 434,013 BioTime common shares to BioTime. Mr. Peabody paid the exercise price of his options through the delivery of 89,623 BioTime common shares to BioTime. The BioTime common shares had a market value of $2.65 per share on that date. Dr. West and Mr. Peabody also sold 270,000 and 100,000 BioTime common shares, respectively, on that date to a BioTime shareholder in a privately negotiated transaction to raise cash proceeds needed to pay additional taxes arising from the exercise of their stock options. During July 2014, BioTime’s subsidiary OncoCyte expanded the clinical development of its urine-based bladder cancer diagnostic test by initiating a multi-site clinical trial that will involve up to 1,200 patient samples obtained from at least four large urology clinics located throughout the United States. The goal of the clinical trial is to compare the performance of OncoCyte’s proprietary PanC-Dx™ bladder cancer markers to the performance of cystoscopy. Investigators in the trial are collecting urine samples from patients undergoing cystoscopy for the diagnosis of either primary or recurrent bladder cancer. Cystoscopy and biopsy results will be compared with the results of OncoCyte’s proprietary diagnostic test panel in determining the overall performance of the PanC-Dx™ markers. PanC-Dx™ is a class of non-invasive cancer diagnostics based on OncoCyte’s proprietary set of cancer markers. On August 7, 2014 we were notified by the U.S. Food and Drug Administration of a premarket approval of our 510 (k) application for Premvia^TM, a HyStem^®-based product indicated for the management of wounds including: partial-thickness, full-thickness, tunneling wounds, pressure ulcers, venous ulcers, diabetic ulcers, chronic vascular ulcers, donor skin graft sites, post-Moh’s surgery, post-laser surgery, podiatric wounds, wound dehiscence, abrasions, lacerations, second degree burns, skin tears, and draining wounds. We evaluated subsequent events through the issuance date of the financial statements. We are not aware of any significant events, that occurred subsequent to the balance sheet date but prior to the filing of this Quarterly Report on Form 10-Q that would have a material impact on our financial statements.

11. Subsequent Events

On July 21, 2014, BioTime’s Chief Executive Officer, Michael D. West, and BioTime’ Senior Vice President, Chief Operating Officer, and Chief Financial Officer, Robert W. Peabody, exercised BioTime stock options to purchase 1,470,400 and 475,000 BioTime common shares, respectively, at an exercise price of $0.50 per share. Dr. West paid the exercise price of his options and a portion of his income tax withholding obligation through the delivery of 434,013 BioTime common shares to BioTime. Mr. Peabody paid the exercise price of his options through the delivery of 89,623 BioTime common shares to BioTime. The BioTime common shares had a market value of $2.65 per share on that date. Dr. West and Mr. Peabody also sold 270,000 and 100,000 BioTime common shares, respectively, on that date to a BioTime shareholder in a privately negotiated transaction to raise cash proceeds needed to pay additional taxes arising from the exercise of their stock options.

During July 2014, BioTime’s subsidiary OncoCyte expanded the clinical development of its urine-based bladder cancer diagnostic test by initiating a multi-site clinical trial that will involve up to 1,200 patient samples obtained from at least four large urology clinics located throughout the United States. The goal of the clinical trial is to compare the performance of OncoCyte’s proprietary PanC-Dx™ bladder cancer markers to the performance of cystoscopy. Investigators in the trial are collecting urine samples from patients undergoing cystoscopy for the diagnosis of either primary or recurrent bladder cancer. Cystoscopy and biopsy results will be compared with the results of OncoCyte’s proprietary diagnostic test panel in determining the overall performance of the PanC-Dx™ markers. PanC-Dx™ is a class of non-invasive cancer diagnostics based on OncoCyte’s proprietary set of cancer markers.

On August 7, 2014 we were notified by the U.S. Food and Drug Administration of a premarket approval of our 510 (k) application for Premvia^TM, a HyStem^®-based product indicated for the management of wounds including: partial-thickness, full-thickness, tunneling wounds, pressure ulcers, venous ulcers, diabetic ulcers, chronic vascular ulcers, donor skin graft sites, post-Moh’s surgery, post-laser surgery, podiatric wounds, wound dehiscence, abrasions, lacerations, second degree burns, skin tears, and draining wounds.

We evaluated subsequent events through the issuance date of the financial statements. We are not aware of any significant events, that occurred subsequent to the balance sheet date but prior to the filing of this Quarterly Report on Form 10-Q that would have a material impact on our financial statements.