Sign in →

Barbiturates Confirmation, Random, Urine

Additional Codes

LAB365

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Urine


Advisory Information


1. For situations where chain of custody is required, a Chain-of-Custody Kit (T282) is available. For chain-of-custody testing, order BARBX / Barbiturates Confirmation, Chain of Custody, Random, Urine.

2. Additional drug panels and specific requests are available. Call 800-533-1710 or 507-266-5700.

3. If urine creatinine is required or adulteration of the sample is suspected, order ADULT / Adulterants Survey, Random, Urine.



Specimen Required


Supplies: Urine Tubes, 10 mL (T068)

Container/Tube: Plastic, 10-mL urine tube

Specimen Volume: 10 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

Additional Information:

1. No specimen substitutions.

2. STATS are not accepted for this test.


Specimen Minimum Volume

5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 14 days
  Frozen  14 days
  Ambient  72 hours

Reference Values

Negative

 

Cutoff concentrations:

BUTALBITAL BY GC-MS

<100 ng/mL

 

AMOBARBITAL BY GC-MS

<100 ng/mL

 

PENTOBARBITAL BY GC-MS

<100 ng/mL

 

SECOBARBITAL BY GC-MS

<100 ng/mL

 

PHENOBARBITAL BY GC-MS

<100 ng/mL

Day(s) and Time(s) Performed

Monday, Wednesday, Friday; Varies

CPT Code Information

80345

G0480 (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
BARBU Barbiturates Confirmation, U 53746-4

 

Result ID Test Result Name Result LOINC Value
21442 Butalbital-by GC/MS 18385-5
20642 Amobarbital-by GC/MS 16239-6
20643 Pentobarbital-by GC/MS 16240-4
20644 Secobarbital-by GC/MS 16238-8
20645 Phenobarbital-by GC/MS 16241-2
20651 Barbiturates Interpretation 69050-3
20647 Chain of Custody 77202-0

Analytic Time

2 days

Forms

If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.