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ColoVantage® (Methylated Septin 9)

Test Code

16983

CPT Code(s)

81401
This test is for non-New York State patient testing only. For New York State patient testing, use 16984, ColoVantage® (Methylated Septin 9) (NY).

Preferred Specimen(s)

10 mL frozen plasma collected in an EDTA (lavender-top) tube

Minimum Volume

5 mL

Collection Instructions

This test requires 10 mL of plasma (minimum volume 5 mL). Specimens with less than 5 mL of plasma will be rejected. To obtain this volume of plasma, collect blood in two (2) 10 mL EDTA (lavender-top) tubes or five (5) standard EDTA (lavender-top) tubes. Centrifuge the blood samples, separate plasma and combine them. Send plasma in a single 10 mL pour-off tube. If a 10 mL pour-off tube is not available, two (2) 5 mL pour-off tubes can be used.

10 mL frozen EDTA plasma (lavender-top tube):
We now stock a large 10 mL EDTA LAV* tube available for use with this test only. This test requires the collection of two (2) 10 mL LAV tubes or five (5) of our standard EDTA LAV tubes.

Minimum acceptable volume = 5 mL plasma
Samples with less than 5 mL plasma will be rejected for testing.

When possible, send samples in a single 10 mL aliquot (pour-off tube) container. If plasma is collected from more than one tube of blood, combine plasma samples into a single container for shipping. In the event that you do not have a 10 mL aliquot container, two (2) 5 mL aliquot containers can be used.

*Please note: 10 mL LAV tubes cannot be used for routine tests such as CBCs.

Specimen Container

Plastic screw-cap vial

Transport Temperature

Frozen

Specimen Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 28 days

Reject Criteria

Received room temperature • Received refrigerated • Less than 5 mL of specimen

Methodology

Real-Time Polymerase Chain Reaction (RT-PCR)

This test was developed and its performance characteristics have been determined by Quest Diagnostics. Performance characteristics refer to the analytical performance of the test.

Performing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

Setup Schedule

Set up: Mon-Fri a.m.; Report available: 3 days

Reference Range(s)

Not detected

Clinical Significance

Methylated Septin 9 is a DNA marker associated with colorectal cancer.

LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result
Code
Result NameLOINC CodeComponent Name
86004306RESULT65810-4SEPT9 gene methylation
86004307INTERPRETATIONPending assignment

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.