Category
ROUTINE CHEMISTRY
Sub Category
ELECTROLYTES
Synonym/Aliases
SODIUM, SERUM
Abbreviations
NA; NA+
Type
INDIVIDUAL TEST
Results
RESULTS READY WITHIN 2-3 HOURS
Method
ION SELECTIVE ELECTRODE (ISE)
Temp
SAMPLE KEPT AT ROOM TEMPERATURE 2-3 HOURS; 2-8ºC 7 DAYS; FROZEN 3 DAYS
Setup
ALL WORKING DAYS
Components Parameters
ALBUMIN SERUM, ALBUMIN FLUID
PRE-ANALYTIC CONSIDERATIONS
Test Ordering Instructions
FILL OUT TEST REQUEST FORM FULLY & LEGIBLY.
Patient preparation
- N/A
Sample type
SERUM
Container/ preservative
SERUM SEPARATOR TUBE (SST/ GEL) OR PLAIN (RED TOP) VACUTAINER.
Sample volume
3ML
Rejection criteria
LABELING ISSUE (UNLABELED/ MISLABELED); MISSING REQUEST FORM; MISMATCH BETWEEN REQUEST FORM & SAMPLE DETAILS; MISSING AGE/ GENDER; WRONG SAMPLE TYPE; INSUFFICIENT SAMPLE.
Other Instructions
SERUM GEL TUBES SHOULD BE CENTRIFUGED WITHIN 1-2 HOURS OF COLLECTION.
RED-TOP TUBES SHOULD BE CENTRIFUGED AND ALIQUOTED WITHIN 1-2 HOURS OF COLLECTION.
Reference intervals
133-146 MMOL/L
Clinical Utility
EVALUATION OF ELECTROLYTE BALANCE (SUSPECTED HYPONATREMIA & HYPERNATREMIA) OR ACID BASE BALANCE.
Test Limitations / Confounders
- N/A