LOINC Code 76678-2: Appearance 4th tube (CSF)
76678-2 is a LOINC code used to identify Appearance 4th tube (CSF) 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 Appearance^4th tube. It is commonly used with the system or sample type CSF.
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 Appearance^4th tube. It is commonly used with the system or sample type CSF.
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
- Appearance of Cerebral spinal fluid--4th tube
- Appearance^4th tube
- A sample of cerebrospinal fluid (CSF) is collected using a procedure called a lumbar puncture or spinal tap. Often, three or more separate tubes of CSF are collected (tube 1, tube 2, tube 3), and multiple tests may be run on the different tubes. Cloudy or turbid CSF may indicate the presence of white or red blood cells, microorganisms, or an increase in protein levels. [Lab Tests Online]
- Appear; Appearance; Appr; Cerebral spinal fluid; Cerebrospinal Fl; Nominal; Point in time; Random; SPEC; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; tube4
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.