LOINC Code 73571-2: Osmol gap (Stl) [Osmolality]
73571-2 is a LOINC code used to identify Osmol gap (Stl) [Osmolality] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Osmol gap. It is commonly used with the system or sample type Stool.
What is this code?
LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Osmol gap. It is commonly used with the system or sample type Stool.
When is it used?
- Used in lab systems, EHRs, and clinical data exchange.
- May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
- Status: ACTIVE
- Order vs observation: Both
What it does not mean
- The code identifies the observation or test, not the actual result.
Key facts
- Osmol gap of Stool
- Osmol gap
- Stool osmotic gap is calculated to evaluate the cause of chronic diarrhea. It is the difference between measured and calculated stool osmolality. A low stool osmotic gap can imply secretory diarrhea due to various causes, including cholera, vasoactive intestinal peptide, laxative abuse, and gastrinoma. A high gap can imply osmotic diarrhea possibly due to chronic pancreatitis, lactase deficiency or Whipple's disease.
- Bowel movement; Chemistry; Faecal; Faeces; Fecal; Feces; Osmo; Osmolality; osmolarity; Point in time; QNT; Quan; Quant; Quantitative; Random; Stl; Stool = Fecal
Where you may see this code
You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.
Common synonyms
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.