Geisinger Medical Laboratories Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

REGIONAL PARASITE ANTIGEN SCREEN

Geisinger Epic Procedure Code: LAB2997             Geisinger Epic ID: 54321
       

SPECIMEN COLLECTION
Specimen type:
Stool, preserved stool
Preferred collection container:
Alternate Collection Container:
Protofix-CLR
Enteric Transport Media (ETM)
10% Neutral Buffered Formalin Container
Specimen required:
Do not contaminate stool specimen with urine. Do not overfill the container past the fill line. C&S Transport Medium filled to fill line or 5 mL liquid stool or 1 teaspoon semi-solid stool in sterile specimen container.

Enteric transport medium, Protofix CLR, 10% formalin, MIF, SAF are also acceptable. Total-FIX is acceptable but not recommended and must be sent to a reference laboratory for testing.
Special notes:
If multiple tests are being ordered on the same specimen, consult test requirements for each test and follow the most stringent guidelines.
Patient preparation:
No ingestion of barium, mineral oil, bismuth, antacids, antimalarial agents, or broad-spectrum antibiotics within 7-14 days of testing.

SPECIMEN PROCESSING
Transport temperature:
C&S Medium, CaryBlair Medium or ETM: 2-8° C for up to 14 days.
Protofix-CLR, 10% formalin, MIF, SAF or Total-Fix: Room temperature or 2-8° C for 60 days.
Sterile specimen container: Room temperature 1 hour.
Specimen stability:
C&S Medium, CaryBlair Medium or ETM: 2-8° C for up to 14 days.
Protofix-CLR, 10% formalin, MIF, SAF or Total-Fix: Room temperature or 2-8° C for 60 days.
Sterile specimen container: Room temperature 1 hour.
Rejection criteria:
Stool contaminated with barium, bismuth, etc. Stool preserved in PVA, duodenal aspirates, rectal swabs, unpreserved specimens >1-hour old, duplicate specimens from same day, or specimen collected on inpatient hospitalized >72 hours after admission. Improperly labeled/identified specimens. Expired collection/transport device. Quantity of specimen insufficient. Delay in transport. Overfilled collection device.

TEST DETAILS
Reference interval:
Negative for Giardia Specific Antigen and Cryptosporidium Antigen
Critical values/courtesy alerts:
Positive for Giardia Specific Antigen or Cryptosporidium Antigen
CPT code(s):
87329, 87328
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Detection of Giardia Specific Antigen or Cryptosporidium parvum Antigen.
Methodology:
Rapid Immunochromatographic Assay
Synonyms:
Giardia, Stool Antigen, Stool, Antigen, EIA, Giardiasis, Crypto, Parasite, Screen, REGPAR
Clinical significance:
Used for the detection of Giardia lamblia and/or Cryptosporidium parvum from patients with limited travel history in geographic areas where Giardia/Cryptosporidium are the most common enteric parasites. A positive GSA/Cryptosporidium test result is indicative of active infection. The Giardia lamblia antibody is not useful for detection of active infection. Cryptosporidium is a significant pathogen, particularly for patients who are immunocompromised.
Doctoral Director(s:)
Donna Wolk PhD, D(ABMM), Raquel Martinez, PhD, D(ABMM)    
Review Date: 06/11/2024

Performing Locations

Geisinger Medical Center

Performing laboratory: Microbiology
Technical Lead: Francis Tomashefski
Frequency: Daily, 2nd shift
Performed STAT? No
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