74545-5
LaboratoryTryptophan-related indole profiling panel - Platelet rich plasma
Definition
Profiling of the plasma indoles tryptophan, 5-hydroxytryptophan (5-HTP), 5-Hydroxytryptamine (serotonin), and 5-hydroxyindoleacetic acid (5-HIAA) is useful in the diagnosis of carcinoid tumors with symptoms suggestive of carcinoid syndrome. Platelet serotonin is the most sensitive indole marker for the diagnosis and follow-up of carcinoids. In contrast to urinary 5-HIAA, platelet serotonin is not influenced by dietary intake of foods containing serotonin. [PMID:11568091]
LOINC 6-Axis Classification
Component
Tryptophan-related indole profiling panel
Property
-
Time Aspect
Pt
System
PRP
Scale Type
-
Method Type
N/A
Details
Class
PANEL.CHEM
Order/Observation
Order
Short Name
Tryp-related indole profile pnl PRP
Display Name
Tryptophan-related indole profiling panel (PRP)
Related Names
Frequently Asked Questions
What is LOINC code 74545-5?
LOINC code 74545-5 identifies "Tryptophan-related indole profiling panel - Platelet rich plasma". Profiling of the plasma indoles tryptophan, 5-hydroxytryptophan (5-HTP), 5-Hydroxytryptamine (serotonin), and 5-hydroxyindoleacetic acid (5-HIAA) is useful in the diagnosis of carcinoid tumors with symptoms suggestive of carcinoid syndrome. Platelet serotonin is the most sensitive indole marker for the diagnosis and follow-up of carcinoids. In contrast to urinary 5-HIAA, platelet serotonin is not influenced by dietary intake of foods containing serotonin. [PMID:11568091]
What does 74545-5 measure?
This code measures Tryptophan-related indole profiling panel in PRP. It belongs to the PANEL.CHEM class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.