Urine Tests Requiring Preservatives, Refrigeration or Special Containers

Test name is listed first, with required preservative second. Recommended collection time period is 24 hours, except for pH. Sodium, potassium, creatinine, and urea nitrogen can be performed on any routine specimen, with or without preservative.

AldosteroneRefrigerate during 24 hr collection in dark plastic container.
Aminolevulinic AcidRefrigerate during 24 hr collection.
ArsenicRefrigerate during 24 hr collection in plastic container.
CadmiumRefrigerate during 24 hr collection in plastic container.
Catecholamines, FractionatedRefrigerate during 24 hr collection in plastic container.
Citric AcidRefrigerate during 24 hr collection in plastic container.
CopperRefrigerate during 24 hr collection in plastic container.
Cortisol, Urinary Free (HPLC)Refrigerate during 24 hr collection in plastic container.
Cystine, Urine QuantitativeRefrigerate after random collection.
HistamineRefrigerate during 24 hr collection in plastic container.
Homovanillic AcidRefrigerate during 24 hr collection in plastic container; maintain refrigeration for submission.
Iodine, 24 Hour UrineRefrigerate during 24 hr collection in plastic container.
LeadRefrigerate during 24 hr collection in plastic container.
MercuryRefrigerate during collection in plastic container.
Metanephrines TotalRefrigerate during 24 hr collection in plastic container.
Methylmalonic AcidRefrigerate during collection in plastic container.
N-Telopeptide, Cross-LinkedRefrigerate during 24 hr collection in plastic container.
OxalatePatient should avoid ingestion of vitamin C prior to collection.
Porphobilinogen, QualitativeRandom urine collection in dark plastic container or wrap yellow round bottom tube in foil to shield from light, no preservative.
Porphyrins & PorphobilinogenRefrigerate during 24 hr collection in dark plastic container.
Vanillylmandelic AcidRefrigerate during 24 hr collection in plastic container.

Tue Nov 14 10:36:50 2017