Category
Routine Chemistry
Sub Category
METABOLIC
Synonym/Aliases
OSMOLALITY FREEZING POINT
Abbreviations
N/A
Type
INDIVIDUAL TEST
Results
RESULTS READY WITHIN 5 WORKING DAYS
Method
FREEZING POINT DEPRESSION
Temp
SAMPLE KEPT AT ROOM TEMPERATURE 1 DAY; 2-8ºC 7 DAYS; FROZEN >30 DAYS.
Setup
ALL WORKING DAYS
Components Parameters
N/A
PRE-ANALYTIC CONSIDERATIONS
Test Ordering Instructions
FILL OUT TEST REQUEST FORM FULLY & LEGIBLY.
Patient preparation
NOT APPLICABLE
Sample type
URINE (SPOT/ RANDOM SAMPLE)
Container/ preservative
STERILE URINE CONTAINER, NO PRESERVATIVE
Sample volume
AT LEAST 5 ML
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
THIS TEST IS NOT SYNONYMOUS WITH URINE OSMOLARITY.
Reference intervals
INTERPRETIVE DATA IS PROVIDED ON THE REPORT.
Clinical Utility
EVALUATING PATIENTS WITH HYPONATREMIA OR SUSPECTED DIABETES INSIPIDUS, SIADH, WATER INTOXICATION, METHANOL INGESTION, ETHYLENE GLYCOL INGESTION ETC.
Test Limitations / Confounders
CORRELATION WITH SERUM OSMOLALITY & ELECTROLYTE RESULTS MAY BE REQUIRED.