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Test ID BLACT Beta-Lactamase


Useful For

Predicting the resistance of beta-lactamase producing isolates to hydrolysis-susceptible beta-lactam antimicrobials

Method Name


Reporting Name

Beta Lactamase

Specimen Type


Shipping Instructions

See Infectious Specimen Shipping Guidelines in Special Instructions for shipping information.

Necessary Information

Specimen source and organism identification are required.

Specimen Required

Specimen Type: Pure culture of actively growing Enterococcus species, Haemophilus influenzae, Moraxella catarrhalis, Neisseria gonorrhoeae, or Staphylococcus species

Container/Tube: Slant

Specimen Volume: Entire specimen

Collection Instructions: Send specimen in an approved mailing container and label as an etiologic agent/infectious substance.

Specimen Minimum Volume


Specimen Stability Information

Specimen Type Temperature Time
Varies Ambient (preferred)

Reference Values

Negative (reported as positive or negative)

Day(s) Performed

Monday through Sunday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
BLACT Beta Lactamase 6985-6


Result ID Test Result Name Result LOINC Value
BLACT Beta Lactamase 6985-6

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

Report Available

1 to 3 days

NY State Approved