Chlamydia trachomatis, Conjunctival Swab, NAA

CPT: 87491
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Test Details

Use

Detect Chlamydia trachomatis infection of the conjunctiva

Limitations

This test was developed, and its performance characteristics determined, by LabCorp. It has not been cleared or approved by the US Food and Drug Administration (FDA).

Methodology

Nucleic acid amplification (NAA)

Specimen Requirements

Specimen

Aptima® unisex swab specimen transport tube

Volume

One Aptima® unisex swab specimen transport tube with blue shaft swab

Container

Aptima® unisex swab specimen transport tube

Collection

Remove pus or discharge from the eye. Do not use the white-shafted swab; discard this swab. Using the blue-shafted swab, labeled "unisex collection swab," thoroughly swab the lower, then the upper conjunctiva, two to three times. Remove the cap from the swab specimen transport tube, and immediately place the specimen collection swab into the transport tube. Carefully break the swab shaft at the scoreline; use care to avoid splashing the contents. Recap the swab specimen transport tube tightly.

Storage Instructions

Maintain specimen at room temperature or refrigerate (2°C to 30°C). Stable at room temperature or refrigerated for 30 days.

Causes for Rejection

Specimen with incorrect patient identification; unlabeled specimen; inappropriate specimen transport conditions; specimen leaked in transit; specimen in expired transport or incorrect transport device; specimens with any other source than conjunctiva/eye/ocular; Aptima® swab transport >30 days from collection; Aptima® swab specimens with incorrect specimen volume; Aptima® swab specimen without a swab; cleaning swab (white-shaft swab) in Aptima® swab transport; any non−Gen-Probe® swab submitted in Aptima® transport device; wooden-shafted swab in transport device; transport device with multiple swabs; bacterial swabs; ProbeTec™ Q-swabs; Aptima® vaginal swab transport

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
188080 Chlamydia, Conjunctiva, NAA 43304-5 188081 Chlamydia, Conjunctiva, NAA 43304-5
188080 Chlamydia, Conjunctiva, NAA 43304-5 188082 Disclaimer: N/A
Reflex Table for Chlamydia, Conjunctiva, NAA
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 183621 C. trachomatis NAA, Confirm 183621 C. trachomatis NAA, Confirm 43304-5

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CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf