Category
SPECIAL CHEMISTRY.
Sub Category
ENDOCRINE
Synonyms/Aliases
ARGININE VASOPRESSIN
Abbreviations
ADH; AVP
Type
INDIVIDUAL TEST
Results
RESULTS READY/ REPORTED IN 7-10 WORKING DAYS
Method
NEPHELOMETRY
Temp
FROZEN
Setup
BATCHED.
Components Parameters
N/A
PRE-ANALYTIC CONSIDERATIONS
Test Ordering Instructions
FILL OUT TEST REQUEST FORM FULLY & LEGIBLY.
Patient preparation
FASTING IS REQUIRED.
Sample type
EDTA PLASMA (FASTING SAMPLE IN A PRE-CHILLED EDTA TUBE, CENTRIFUGE IMMEDIATELY & FREEZE SPECIMEN IN PLASTIC TUBE).
Container/ preservative
PURPLE TOP
Sample volume
2ML EDTA PLASMA
Rejection criteria
LABELING ISSUE (UNLABELED/ MISLABELED); MISSING REQUEST FORM; MISMATCH BETWEEN REQUEST FORM & SAMPLE DETAILS; MISSING AGE/ GENDER; WRONG SAMPLE TYPE; INSUFFICIENT SAMPLE; SAMPLES WHICH ARE NOT FROZEN.
Other Instructions
PROMPTLY SEPARATE EDTA PLASMA AND IMMEDIATELY FREEZE. LABEL OF SEPARATION VIAL MUST INCLUDE SAMPLE TYPE.
Reference intervals
AGE & GENDER APPROPRIATE VALUES ARE PROVIDED ON THE REPORT. INTERPRETATION ALSO DEPENDS ON PLASMA OSMOLALITY.
Clinical Utility
EVALUATION OF DIABETES INSIPIDUS (CENTRAL VS. NEPHROGENIC) & SYNDROME OF INAPPROPRIATE ADH (SIADH).
Test Limitations/ Confounders
RELEASED IN A PULSATILE MANNER. TEMPERATURE SENSITIVE ANALYTE. IMMUNOASSAY INTERFERENCE CAN GIVE RISE TO SPURIOUS RESULTS. SUCH INTERFERENCE CAN ARISE FROM PRESENCE OF HETEROPHILE ANTIBODIES, ANTI-ANIMAL ANTIBODIES, AUTOANTIBODIES, PARAPROTEINS, BIOTIN ETC. RESULTS SHOULD ALWAYS BE CORRELATED WITH CLINICAL FINDINGS.