MALDITOF Identification-Mycobacterial

Identification of mycobacteria using Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry is the primary identification method.

Portal Ordering Code: MALDITOF
CPT Code(s): 87118

Fee Schedule

Storage and Transport Criteria: Specimen Storage Specimen Transport

Acceptable Specimens

Minimum Volume

Frozen Range
-70°C - 0°C

Refrigerated Range
0.1°C - 8°C

Room Temperature Range
8.1°C - 30°C

Stability at
4°C - 25°C

Pure culture isolate None; Viable growth should be present on the submitted subculture Reject Acceptable Acceptable 8 hours
Includes: Ancillary testing (ie, 16S gene sequencing, conventional biochemicals) will be employed as required. Additional fees may apply.
Methodology: Mass Spectrometry
Assay Category: LDT (Laboratory Developed Test)
Reference Range: See laboratory report
Alternative Names: MALDI
Preferred Specimen(s): Pure culture isolate in solid media (Lowenstein-Jensen or Middlebrook 7H11)

Pure culture isolate in liquid media (BD BACTEC MGIT/modified Middlebrook 7H9)
Alternative Specimen(s): N/A
Minimum Volume: None; Viable growth should be present on the submitted subculture.
Special Instructions: N/A
Reject Criteria: Inadequately labeled specimens

Leaking specimens

QNS (quantities not sufficient)

Specimens not meeting the Storage & Transport criteria upon receipt at laboratory
Setup Schedule: Testing is performed on an as-needed basis.
Turn around time (TAT): 4 weeks from arrival at the lab

Acceptable Specimens	Minimum Volume	Frozen Range -70°C - 0°C	Refrigerated Range 0.1°C - 8°C	Room Temperature Range 8.1°C - 30°C	Stability at 4°C - 25°C
		Specimen Storage			Specimen Transport
Pure culture isolate	None; Viable growth should be present on the submitted subculture	Reject	Acceptable	Acceptable	8 hours