17-Hydroxycorticosteroids, Urine 17COR
|Collect||24-hour urine. Sample must be refrigerated during collection.|
12 mL aliquot from a well-mixed 24-hour collection, frozen. (Min: 8 mL)
|Remarks||Samples refrigerated with preservatives are acceptable. Mix well, add 1 g boric acid/100 mL urine, adjust pH (with boric acid) to 5.0-7.0 and freeze. Record total volume, collection time, and pH on transport tube and test request form.|
|Stability||Ambient: 4 hours with preservative; Refrigerated: 1 week with preservative; Frozen: 1 month|
Alkali preservatives (e.g. Specimens previously preserved with NaOH).
Random urines are acceptable, but are reported as mg/L and have no reference interval.
|Preferred Specimen Collection Device(s)|