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Test Code OSULLIVAN O'Sullivan Glucose (1 hr Glucose)Non-Fasting (Gestational)

Specimen Requirements

Container/Tube: GRN/SST/GREY
Preferred: Plasma
Acceptable: Serum
Specimen Volume: 1.0 mL

Note: If patient specimens are not to be collected at a Willis-Knighton patient service center, collect specimens in Grey-top tube (Sodium Floride). Fasting not required unless specified by physician. Have patient (pregnant woman) ingest a 50 g load of glucose. Draw specimen 1 hour later.

SPECIMEN PROCESSING and HANDLING

Complete clot formation should take place before centrifugation. Serum or plasma should be physically separated from cells as soon as possible with a maximum limit of two hours from the time of collection.

TRANSPORT TEMPERATURE

Glycolysis decreases serum glucose by approximately 5% to 7% per hour in normal uncentrifuged, coagulated blood at room temperature. In separated, nonhemolyzed sterile serum, the glucose concentration is generally stable as long as 8 hours at 25 °C and up to 72 hours at 4 °C; variable stability is observed with longer storage conditions. Glycolysis can be inhibited and glucose stabilized for as long as 3 days at room temperature by addition of sodium iodoacetate or sodium fluoride (NaF) to the specimen.

PERFORMING LAB

WKMC, WKB, WKP, WKS