Consolidated Balance Sheets (Unaudited) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
CURRENT ASSETS
Cash	$ 482,175	$ 541,171
Marketable securities	9,303,196	9,830,085
Prepaid expenses	12,917	688,667
TOTAL CURRENT ASSETS	9,798,288	11,059,923
TOTAL ASSETS	9,798,288	11,059,923
CURRENT LIABILITIES
Accounts payable and accrued expenses	483,644	499,535
Accounts payable and accrued expenses - related party	300,000	300,000
TOTAL CURRENT LIABILITIES	783,644	799,535
PIK convertible notes payable, net of debt discount	107,065	132,284
PIK convertible notes payable, net of debt discount - related parties	187,996	186,149
TOTAL LIABILITIES	1,078,705	1,117,968
STOCKHOLDERS’ EQUITY
Common stock, $.0001 par value, 100,000,000 shares authorized, 17,253,278 and 17,209,612 shares issued and outstanding at March 31, 2022, and December 31, 2021	1,726	1,722
Additional paid-in-capital	32,701,195	32,410,452
Accumulated deficit	(23,583,979)	(22,221,870)
Accumulated other comprehensive loss	(399,359)	(248,349)
TOTAL STOCKHOLDERS’ EQUITY	8,719,583	9,941,955
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	9,798,288	11,059,923
Preferred Stock [Member]
STOCKHOLDERS’ EQUITY
Preferred stock
Series B Convertible Preferred Stock [Member]
STOCKHOLDERS’ EQUITY
Preferred stock

Accounts payable and accrued liabilities related party current.

No definition available.

Name:	PTIX_AccountsPayableAndAccruedLiabilitiesRelatedPartyCurrent
Namespace Prefix:	PTIX_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.