M

Collection Tube Abbreviations

  RT  =  Plain Red top   GYT  =  Gray top   RBL  =  Royal Blue top
  RHalo = Red Halo   YT  =  Yellow top   PT  =  Pink top
  BLT  =  Blue top   GRN  =  Green top   PPT  =  Pearl top
  LT  =  Lavender top   SGRN  =  Special Green   GHalo = Green Halo
Test
(TEST CODE)
Lab
Section
Special
Requirements
Reference Ranges and Critical Values Testing Schedule and Expected
Turnaround
Time
MAG Antibody
 
Ref 7 ml blood, 1 large RT ARUP Test Directory Mailout: 5-7 days
Magnesium, Serum

Adult (MG2)
Neonate (MAGP2)
Chem Adults: 5 ml blood, 1 Light Green
Neonates: 1 green bullet tube 
Adult: 1.6 - 2.6 mg/dL Critical:<1.0 or >9.0

Pediatric:  1.8-2.9 mg/dL
Critical:
<1.3 or>3.9   

24 hrs/ 7 days
Results: 2 hrs
STAT: 1 hr
Magnesium, Urine
(UMG2)
Chem 24 hr urine, urine bottle obtained from Central Processing.  Timed:  73-122 mg/24hr
 
24 hrs/ 7 days
Results: 2-4 hrs
 
Malaria Smears
{Blood Parasites}

(BPSM)

Includes Babesia, Malaria, Trypanosomes, & Microfilaria.

Micro

3 ml blood; 1 LT

In cases of suspected malaria, specimens should be taken at intervals of 6 to 18 hours for at least three successive days. 
Negative
Physician will be called with Positive results
M-F
Results: 24 hrs. After hours contact CP Resident (688- 2820).
Manganese, Serum  Ref 1 royal blue top, no additives ARUP Test Directory Mailout: 5-7 days
Marijuana Screen, Serum
(THCS)
Ref 10 ml blood, 1 plain RT ARUP Test Directory Mailout: 5-7 days
Measles [Rubeola] Antibody, IgG
(MEASG)
Ref 5 ml blood, 1 Gold Top  
Label sample as "acute" or "convalescent"
ARUP Test Directory Mailout: 5-7 days
Measles [Rubeola] Antibody, IgM
(MEASM)
Ref 5 ml blood, 1 Gold Top  
Label sample as "acute" or "convalescent"
ARUP Test Directory Mailout: 5-7 days
Measles [Rubeola] Panel, IgG & IgM
(MEASP)
Ref 5 ml blood, 1 Gold Top  
Label sample as "acute" or "convalescent"
ARUP Test Directory Mailout: 5-7 days
Melanin, Urine Ref 10 ml random urine
Critical frozen
ARUP Test Directory Mailout: 5-7 days
Meperidine (Demerol) Ref   7 ml blood, 1 plain RT ARUP Test Directory Mailout: 5-7 days
Mephobarbital
 
Ref   5 ml blood, 1 plain RT ARUP Test Directory Mailout: 5-7 days
Meprobamate
 
Ref 5 ml blood, 1 plain RT ARUP Test Directory Mailout: 5-7 days
Mercury, Blood
(HGBLD)
Ref One 7 mL dark blue top with EDTA ARUP Test Directory Mailout: 5-7 days
Metanephrines Quantitation, Urine Ref 24 hr urine, refrigerated ARUP Test Directory Mailout: 5-7 days
Methadone, Serum Ref 7 ml blood, 1 plain RT ARUP Test Directory Mailout: 5-7 days 

Methadone, Urine Screen

Chem

5 ml Urine

Negative

24 hrs/7 days, Results: 2 hours, STAT:1 hour

Methanol Ref  7 ml blood, 1 plain RT ARUP Test Directory Mailout: 5-7 days
Methotrexate
(METX)
Chem 5 ml blood, 1 Gold Top  
 
<0.1 micromol/L 72 hours postinfusion concentration.

Following a 4-6 hour high dose intravenous infusion of methotrexate, postinfusion concentrations greater than the following indicate an increased risk of toxicity if conventional low dose leucovorin rescue is given:

24 hr postinf:≥10.0 mcmol/L
48 hr postinf: ≥1.0 mcmol/L
72 hr postinf: ≥0.2 mcmol/L
 
24 hrs/ 7 days
Results: 2 hrs
STAT: 1 hr
Methsuximide/ Normethsuximide Ref 7 ml blood, 1 large RT     ARUP Test Directory Mailout: 5-7 days
Methylmalonic Acid, Serum
(SMMA)
Ref 7 ml blood, 1 large RT ARUP Test Directory Mailout: 5-7 days
Methylmalonic Acid, Urine
(URMMA)
Ref 2 ml of random or 24 hour urine ARUP Test Directory Mailout: 5-7 days
Mexiletine Ref 5 ml blood, 1 RT   ARUP Test Directory Mailout: 5-7 days
Microalbumin, Urine
24 hour (UMALB)
Random (MALBU)
Chem Random Urine or 24h/urine, refrigerate, no preservative.

Microalbumin/Creatinine ratio: 0-30 mg/g

24 hrs/ 7 days
Results: 2 hrs
STAT: 1 hr
Microfilaria Blood Smear
{Blood Parasites Smear}
(BPSM)

Includes Babesia, Malaria, Trypanosomes, & Microfilaria.

Micro

3 ml blood; 1 LT

In cases of suspected malaria, specimens should be taken at intervals of 6 to 18 hours for at least three successive days. 
Negative
Physician will be called with Positive results
M-F
Results: 24 hrs. After hours contact CP Resident (688- 2820).
Mitochrondrial M2 Antibody, IgG
(MITAB)
Ref 5 ml blood, 1 Gold Top  
Separate serum from cells ASAP
ARUP Test Directory Mailout: 5-7 days
Mixing Study Screen
(50-50 mix)
(MIX
SC)
Heme 3.5 BLT

Specimen amount is critical to maintain proper ratio of blood to anticoagulant.

  Daily, 7am-8pm

Routine results available within 24 hours

STAT tes
t results available within 4 hours
 
Morphine, Urine Ref Random urine.
Includes quantitation of all opiates
ARUP Test Directory Mailout: 5-7 days
Monospot 
Infectious Mononucleosis Screen
(MONS) 
Chem  5 ml blood, 1 RT Negative 24 hrs/ 7 days
Results: 2 hrs
STAT: 1 hr

Mycobacteria other than Tuberculosis-PCR
(MOTT)

 

Ref to VA

CSF, sputum or tissue in sterile, no additive, leakproof transport container.

Test performed at VA hospital

Negative

Physician will be called with Positive results

M-F

Results: 7-10 days
Multiple Sclerosis Panel 
(MSPAL)
Ref 2 ml CSF and 6 ml blood, 1 Gold Top   ARUP Test Directory Mailout: 5-7 days
Mumps Virus Antibody, IgG
(MVIR)
Ref 5 ml blood, 1 Gold Top   
Label sample as "acute" or "convalescent"
ARUP Test Directory Mailout: 5-7 days
Muramidase, Serum Ref See Lysozyme, Serum or Urine.      
Mycoplasma Antibodies, IgG & IgM
(MYPNU)
Ref 5 ml blood, 1 Gold Top  
Separate serum from cells ASAP.  Label sample as "acute" or "convalescent"  
ARUP Test Directory Mailout: 5-7 days
Mycoplasma Culture
(MYCUL)
Ref Throat swab, sputum, CSF, tissue.  Refer to ARUP manual for more information. ARUP Test Directory Mailout: up to 30 days
Myelin Basic Protein, CSF
(MYBO)
Ref 1 ml CSF
Freeze.  
ARUP Test Directory Mailout: 5-7 days
Myocardial Antibody, IgG Ref 5 ml blood, 1 Gold Top  
Separate serum from cells ASAP
ARUP Test Directory Mailout: 5-7 days
Myoglobin
(SMYO)
Chem 5 ml blood, 1 Light Green  3.0 - 70.0 g/mL

 

24 hrs/ 7 days
Results: 2 hrs
STAT: 1 hr

Myoglobin, Urine
(UMYO)
Heme 8 ml fresh urine Negative 24 hrs/ 7 days
Results: 2 hrs

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Updated: 12.5.2012