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Laboratory Contacts

Phone:

607-547-3975
607-547-3866
607-547-6722
Fax:
607-547-5438

Created by:

Benjamin Bascomb & Jamie Govern (2015)

____________________________________

 

Informational Links

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Informational Links for Providers

 

Patient Information

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General Information

Top Reference Laboratory (In order to search)

  1. Mayo Clinical Labs
  2. ARUP Laboratories
  3. Quest Laboratories
  4. LabCorp

Mayo Clinic Laboratories

Epic Test Code LAB4941 RPR (Rapid Plasma Reagin) with Reflex

Important Note

Screening Newborns (<30 days old)

Performing Location(s)

OCH

Synonyms

Serological Test for Syphilis (STS)

Specimen Type

Serum

Preferred Container

Gold or Red top tube

Blood Tube Draw Volume

Min 50% draw volume  

Minimum Volume to Submit for Testing

2 mL Serum

Storage Requirements

Sample tubes should be centrifuged within 2 hour of collection followed by transfer of the serum (red or gold top) to a labeled plastic, aliquot tube.
See Causes of Rejection for temperature requirements.

Transportation Needs

Deliver specimen to laboratory within 1 hour of collection if unspun. If not possible see "storage Requirements". 

Causes for Rejection

Mislabeled or unlabeled specimen
Less than 50% draw for Vacutainer tubes
Wrong specimen container
Contaminated specimen

Hemoylsis  ≥5+

Lipemia/Turbidity  ≥ 4+

Serum > 5 days Refrigerated

 

Limitations

When result is Non-reactive: No laboratory evidence of syphilis infection. If recent exposure is suspected, re-draw specimen in 2-4 weeks and order RPR with reflex (LAB4941).

 

When result is Reactive: Non-treponmal antibodies detected. Syphilis infection unlikely; biologic false positive likely. Clinical evaluation should be performed to identify signs, symptoms or past history of infection. If recent exposure is suspected, re-draw specimen in 2-4 weeks and order RPR with reflex (LAB4941).

Reference Values

Population Units Reference Range
All Populations none Non-Reactive

 

Reflex Testing

When an RPR screen is reactive, a titer will be performed and billed.

 

When an RPR screen is reactive, the specimen will be sent to the reference laboratory for confirmatory testing TP-PA (CPT: 86780)

 

 

Days of Analysis

M,W,F

Available STAT

No

Includes

Titer, if positive

Additional Information

Additional Information:

A reactive RPR is a NYSDOH reportable communicable disease. The NYSDOH will be notified of all positive RPR’s.

 

This test is not available on a STAT basis.

Methodology

Charcoal agglutination

CPT Code

86592 (also see reflex testing)

Last Updated

18-Mar-22 BHD