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Chlamydia/Gonorrhea Urine NAT

Ordering Info & Methodology

Test Code

Cerner Synonyms


Chlamydia trachomatis (CT) NAT, CT, Chlamydia, STI

Turn Around Time


Ordering Guide

Specimen Requirements

Sample Type

Collection Container

Alternate Collection Containers

Add on stability
This is the length of time after sample collection that this analyte is stable. Test can be added to a previously collected sample if the time since collection is less than the add on stability time.

Minimum Volume

Add On Stability

Collection and Shipping Requirements

Reference Intervals

Female Reference Interval

Age Category
Reference Interval

Male Reference Interval

Age Category
Reference Interval
Additional Notes

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Measurement Uncertainty (MU)
Every laboratory value is an estimate of the true concentration of substance. MU is the 95% confidence interval around that estimate. 95% of the time, the true concentration will be within the range of the reported value ±MU. This value is based on analytical variability (precision) and does not reflect other factors such as sample collection and handling which may also affect the result.


Reported sodium = 140 mmol/L
Sodium MU = 1%
Expanded uncertainty = 140 mmol/L ± 1% or 140mmol/L ± 1.4 mmol/L
Interpretation - the true value of sodium in the sample is in the range 138.6-141.4 mmol/L, with 95% confidence.

Measurement Uncertainty

For endocervical swabs, urethral swabs, throat swabs, and eye swabs: use the Hologic® Aptima Unisex Swab Specimen Collection Kit.  The kit contains two swabs, a white-capped tube, and collection instructions.

For urine: use C&S container.  The patient should not void for 2 hours prior to collection.  Collect the “First Catch” urine (the first 15-20 mL of urine voided).  Midstream urine specimens are not suitable for STI testing.

If submitting a vaginal swab or rectal swab (including testing for lymphogranuloma venereum [LGV]): use the Hologic® Aptima Multitest Swab Specimen Collection Kit.  The kit contains one orange swab, one tube with an orange label, and collection instructions.

Collection kits may be obtained from Laboratory Accessioning.  A single swab is acceptable if testing both Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (GC).

C. trachomatis NAT testing on eye and nasopharyngeal swabs will be referred out to BC CDC.

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