In this section
Random or Timed Urine in PLAIN container
Laboratory note:听
Random Urine: Acidify urine with听1M NaOH within 2hrs of collection.听See SR-W-012.
Timed Urine:听Acidify urine with听1M NaOH听within 2hrs of collection and allow to stand for 2 hours prior to testing.听See SR-W-012.
As requested