Category
Molecular Genetic Pathology & Cytogenetics
Sub Category
Endocrine
Synonym/Aliases
75g Ogtt, Gestational
Abbreviations
N/A
Type
profile/ panel (bundled tests)
Results
RESULTS READY WITHIN 4 HOURS
Method
SPECTROPHOTOMETRIC ENZYMATIC
Temp
TEMPERATURE KEPT REFRIGIRATED
Setup
DAILY
Components Parameters
0 hours, 1 hour post load, 2-3 hours post load glucose tests.
PRE-ANALYTIC CONSIDERATIONS
Test Ordering Instructions
FILL OUT TEST REQUEST FORM FULLY & LEGIBLY. FOR EXPECTANT CLIENTS ONLY.
Patient preparation
FASTING FOR AT LEAST 8 HOURS REQUIRED.
Sample type
FLUORIDE/ OXALATE PLASMA. MULTI-SAMPLING IS REQUIRED I.E. BASELINE FASTING SAMPLE; THEN 1 & 2 HOUR POST LOAD SAMPLES. SAMPLE LABELS MUST INCLUDE COLLECTION SEQUENCE E.G. 0 (BASELINE), 1HR, 2HR SAMPLE
Container/ preservative
FLUORIDE/ OXALATE (GREY TOP) VACUTAINER
Sample volume
AT LEAST 2ML
Rejection criteria
LABELING ISSUE (UNLABELED/ MISLABELED); MISSING REQUEST FORM; MISMATCH BETWEEN REQUEST FORM & SAMPLE DETAILS; MISSING AGE/ GENDER; WRONG SAMPLE TYPE; INSUFFICIENT SAMPLE; GROSS HEMOLYSIS; NONFASTING SAMPLES.
Other Instructions
URINE SAMPLES FOR URINE GLUCOSE TESTING ARE NOT ROUTINELY COLLECTED.
Reference intervals
AS PER THE LATEST AMERICAN DIABETIC ASSOCIATION CONSENSUS GUIDELINES.
Clinical Utility
SCREENING & DIAGNOSIS OF GESTATIONAL DIABETES MELLITUS (GDM)
Test Limitations / Confounders
-N/A