Laboratory:
Sendout
Referral Laboratory:
MDHHS
MiChart Codes:
LAB7345
Soft Order Code:
SO
Synonyms:
Spirochete Smear Treponema pallidum Darkfield
Darkfield, Treponema pallidum Fluorescent Antibody Darkfield Test
Treponema pallidum Darkfield Exam Syphilis Darkfield
Offsite Collection:
Call the Michigan Department of Health & Human Services at 517-335-8080 and request kit: Fluorescent Darkfield for Treponema pallidum, Unit number 10, with Blanks FB10 and FB8. Air dry the slides for 20 minutes to inactivate the treponemes and render them non-infectious before transporting. Place slides in the cardboard book-type mailer; store at room temperature. Fill in the information requested on the form labeled "Examination for Treponema pallidum", using a pen with black ink or typewriter with black ribbon.
Onsite Collection (Michigan Medicine Hospitals Only):
1) Air dry the slides for 20 minutes to inactivate the treponemes and render them non-infectious before transporting. Place slides in the cardboard book-type mailer. 2) Fill in the information requested on the form labeled Examination for Treponema pallidum, using a pen with black ink or typewriter with black ribbon. Return the form, slides, and a Special Testing requisition to Specimen Processing.
Days Set Up:
Monday - Friday, 7:30am - 5:30pm
Analytic Time:
Up to one week
Reference Range:
*Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Treponema pallidum not found.
Test Usage:
To determine the presence of Treponema pallidum in a syphilitic chancre.
Test Limitations:
Failure to demonstrate the presence of Treponema pallidum does not indicate its absence in the lesion.
Test Methodology:
Direct Immunofluorescence
Additional Information:
Test sent to Michigan Department of Health & Human Services (MDHHS); although there is no charge for testing, MLabs charges a handling fee for processing and forwarding specimens to MDHHS.
CPT Code:
99001
Fee Code:
20230
Test ID:
932