Chymotrypsin, Stool
Test Mnemonic
CHYMO
CPT Codes
- 84311 - QTY (1)
LOINC ®
25375-7
Performing Laboratory
Quest SJC
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 g | Stool | Sterile container | Refrigerated |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 g |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | Unacceptable |
| Refrigerated | 2 weeks |
| Frozen | 30 days |
Days Performed
Wed
Turnaround Time
4 - 12 days
Methodology
| Name | Description |
|---|---|
| Enzymatic | |
| Spectrophotometry (S) |
Reference Range
| Chymotrypsin, Stool | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 2.3 - 51.4 | U/g |
Special Info
Patients receiving pancreatic enzymes should discontinue taking the enzymes at least 5 days before the collection of the stool sample.
Clinical Info
The diagnosis of chronic pancreatitis depends upon the demonstration of functional impairment of the pancreas. Impairment is detemined by several means, two of which are: 1. Direct measurement of exocrine secretion into the duodenum after stimulation by a standard meal or after stimulation by intravenous secretin/pancreozymin.2. The direct measurement of the activities of certain enzymes in feces. Chymotrypsin activity in stool, for example, has been shown lower than normal in patients with pancreatic exocrine insufficiency.