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HelpTest Code OCGF Occult Blood Gastric Fluid
Specimen and Container/Tube
Specimen Type: Gastric fluid
Preferred Specimen: sterile container
Other Acceptable specimens: not applicable
Specimen Handling and Transport Instructions
UCMC Onsite Instructions: Collect specimen per standard collection procedure and send to laboratory immediately.
UCMC Offsite and UC MedLab Outreach Instructions: Collect specimen per standard collection procedure and send to laboratory immediately. Specimens must be received within 24 hours of collection. If transport is delayed, specimens may be stored at room temperature.
Rejection Criteria
- Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits.
- Frozen or heated specimens will be rejected
- Quantity not sufficient specimens are not suitable for testing and will be rejected
- Grossly bloody specimens are not suitable for testing and will be rejected.
Reference Values
|
Analyte |
Age |
Sex |
Reference Range |
|
Occult blood gastric fluid |
All |
Male and female |
Negative |
|
pH gastric fluid |
All |
Male and female |
4.5 – 8.0 |
Critical Values
Not applicable
Turnaround Time
Turnaround times are relative to the time the specimen is received in the test laboratory.
STAT Turnaround Time: 60 minutes
Routine Turnaround Time: 24 hours
Testing Schedule: 24/7
CPT Codes
82271
LOINC Codes
OCCG 2334-1, PHG 2749-0
Volume
Preferred Volume: 3.0 mL
Minimum Volume: 1.0 mL
Specimen Stability
|
Storage Temperature |
Stability |
|
Room temperature (20 - 25°C) |
24 hours |
|
Refrigerated (2 - 10°C) |
5 days |
|
Frozen (-20°C) |
not acceptable |
Collection Instructions
Collect specimen per standard laboratory collection procedures.
Test Components
Occult blood gastric fluid result, pH gastric fluid
Clinical Indications
- Screening for occult blood detection in gastric fluid or vomitus
- Useful for diagnosis and management of gastric conditions
Methodology
Guaiac method
Synonyms/Search Keywords
Gastroccult
Additional Information
Not applicable
Last Reviewed Date
9/5/2024