Test Id : FPEPA
Gastric Pepsin Assay
Method Name
A short description of the method used to perform the test
Enzymatic method
NY State Available
Indicates the status of NY State approval and if the test is orderable for NY State clients.
Reporting Name
Lists a shorter or abbreviated version of the Published Name for a test
Aliases
Lists additional common names for a test, as an aid in searching
abc
Airway Pepsin
Pepsin Assay
Specimen Type
Describes the specimen type validated for testing
Body Fluid
ORDER QUESTIONS AND ANSWERS
| Question ID | Description | Answers |
|---|---|---|
| Z3670 | Specimen Type |
Specimen Required
Defines the optimal specimen required to perform the test and the preferred volume to complete testing
Specimen Type: Body fluid
Sources: Tracheal or bronchial secretions
Container/Tube: Standard transport tube
Specimen Volume: 1 mL
Collection Instructions:
1. Collect a minimum of 1 mL tracheal or bronchial fluid.
2. Transfer to a tightly capped plastic tube and freeze immediately.
3. Ship frozen.
Specimen Minimum Volume
Defines the amount of sample necessary to provide a clinically relevant result as determined by the testing laboratory. The minimum volume is sufficient for one attempt at testing.
0.5 mL
Reject Due To
Identifies specimen types and conditions that may cause the specimen to be rejected
Specimen Stability Information
Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Body Fluid | Frozen | 30 days |
Clinical Information
Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test
Refer to www.nemours.org/pediatric-research/research-labs/gastroenterology-clinical.html
Reference Values
Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
Protein Unit: mg/mL
Pepsin A Unit: ng/mL
Pepsin A Reference Range (ng/mL):
<12.5 negative
12.5-100 weak to moderate positive
>100 strong positive
Cautions
Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances
Note: Assay normal ranges are based on normal sample or medical conditions. Samples with the following abnormal conditions might affect the results.
-Pepsin A is rapidly degraded in alkaline pH (>6.0) as pepsin is not stable at alkaline condition. Samples with pH >6 might have reduced activity, resulting in negative pepsin.
-Absence of protein content or extremely low (<0.01 mg/mL) in a sample might indicate sample over dilution during collection, which can also lead to negative pepsin.
-High protein contents (>2 mg/mL or higher) in a sample might interfere enzymatic activity, thus decrease pepsin concentration. If borderline positivity was discovered in a high protein sample, assay might be repeated by diluting sample protein to 2 mg/mL.
A negative result does not rule out a micro-aspiration event. The detection of pepsin A in the airway is determined by the time of the aspiration, the degree of the aspiration, and the pH of the aspirates in the final collected media.
Results from this assay should be used in conjunction with clinical findings and other lab results.
PDF Report
Indicates whether the report includes an additional document with charts, images or other enriched information
Day(s) Performed
Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.
Monday through Thursday
Report Available
The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.
Performing Laboratory Location
Indicates the location of the laboratory that performs the test
Fees :
Several factors determine the fee charged to perform a test. Contact your U.S. or International Regional Manager for information about establishing a fee schedule or to learn more about resources to optimize test selection.
- Authorized users can sign in to Test Prices for detailed fee information.
- Clients without access to Test Prices can contact Customer Service 24 hours a day, seven days a week.
- Prospective clients should contact their account representative. For assistance, contact Customer Service.
CPT Code Information
Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Clinic Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.
CPT codes are provided by the performing laboratory.
CPT codes are provided by the performing laboratory.
83986
84157
82657
LOINC® Information
Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the order and results codes of this test. LOINC values are provided by the performing laboratory.
| Test Id | Test Order Name | Order LOINC Value |
|---|---|---|
| FPEPA | Pepsin A Assay | Not Provided |
| Result Id | Test Result Name |
Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
|
|---|---|---|
| Z3670 | Specimen Type | 31208-2 |
| Z3671 | pH | Not Provided |
| Z3672 | Protein | Not Provided |
| Z3673 | Pepsin A | Not Provided |
| Z3674 | Interpretation | Not Provided |