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BUSINESS DESCRIPTION (Narrative) (Details) - USD ($) |  |  |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 02, 2021 | Jun. 26, 2020 | Mar. 26, 2020 | Sep. 07, 2018 | Mar. 31, 2021 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2020 | Apr. 30, 2020 | Apr. 13, 2020
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Oncology test reporting time |  |  |  |  |  | 1 day |  |  |  |  |
Net loss |  |  |  |  | $ 1,500,000 |  |  |  |  |  |
Working deficiency |  |  |  |  | 300,000 |  |  |  |  |  |
Net cash used in operating activities |  |  |  |  | (1,289,000) |  |  | $ (1,589,000) |  |  |
Proceeds from issuance of common stock |  |  |  |  | $ 1,260,000 |  |  | $ 1,350,000 |  |  |
Proceeds from long-term debt |  |  |  |  |  |  |  |  | $ 800,000 |  |
Common stock, par value |  |  |  |  | $ 0.01 |  |  |  | $ 0.01 |  |
Term of test reporting time for patients |  |  |  |  | 1 day |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Oncology test reporting time |  |  |  |  |  |  | 10 days |  |  |  |
Term of test reporting time for patients |  |  |  |  | 10 days |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Oncology test reporting time |  |  |  |  |  |  | 7 days |  |  |  |
Term of test reporting time for patients |  |  |  |  | 7 days |  |  |  |  |  |
Sales Agreement with Alliance Global Partners |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum aggregate initial offering price |  |  |  |  |  |  |  |  |  |  | $ 50,000,000
Lincoln Park [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Value of shares issued |  |  | $ 10,000,000 | $ 10,000,000 |  |  |  |  |  |  |
Shares sold in offering (in shares) |  |  | 4,980,000 |  |  |  |  | 930,012 |  |  |
Proceeds from issuance of common stock |  |  |  |  |  |  |  | $ 1,300,000 |  |  |
Equity purchase agreement value remaining available |  |  | $ 1,200,000 |  |  |  |  |  |  |  |
Sale of common stock |  | 4,500,000 |  |  |  |  |  |  |  |  |
LP 2020 Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of common stock |  |  | $ 8,800,000 |  |  |  |  |  |  |  |
Subsequent Events | Sales Agreement with Alliance Global Partners |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of common stock | $ 15,400,000 |  |  |  |  |  |  |  |  |  |
Common stock, par value | $ 0.01 |  |  |  |  |  |  |  |  |  |
Sale of common stock | 4,501,000 |  |  |  |  |  |  |  |  |  |
Additional shares available for future sales | $ 6,600,000 |  |  |  |  |  |  |  |  |  |
Subsequent Events | Sales Agreement with Alliance Global Partners | Maximum |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of common stock | $ 22,000,000 |  |  |  |  |  |  |  |  |  |
Joint Venture [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of interest in joint venture |  |  |  |  |  |  |  |  |  | 49.00% |
Joint Venture [Member] | Poplar Put Right [Member] | Scenario, Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of interest in joint venture |  |  |  |  |  |  |  |  |  | 100.00% |
Price per share |  |  |  |  |  |  |  |  |  | $ 1.00 |
Purchase price |  |  |  |  |  |  |  |  |  | $ 51 |
Joint Venture [Member] | Popular Healthcare PLLC [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of interest in joint venture |  |  |  |  |  |  |  |  |  | 51.00% |

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