F

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
Factor (Coagulation) Assays; II, V, VII, X, XI, XII  Ref 2 BLT
 
ARUP Test Directory Mailout: 2-3 days
Factor V Leiden Molecular
Diagnostics
5 ml blood, Lavender top (LT), Room Temperature No mutation detected 3-5 days
Factor VIII Assay
(F8)
Hematology 2 BLT
 
60 -150% Routine: Tuesday
Results: 7 days or less

Stat: 24hrs/7days
Results: 2 hours
Factor IX Assay
(F9)
Hematology 2 BLT
 
60 -150% Routine: Tuesday
Results: 7 days or less

Stat: 24hrs/7days
Results: 2 hours
Factor XIII Screen
(5M Urea)
Ref 2 BLT
ARUP Test Directory Mailout: 2-7 days
Fatty Acids, Free
 
Ref 6 ml blood, 1 Gold Top
Freeze serum
ARUP Test Directory Mailout: 5-7 days
FE {Iron, Total}
(IRON)
Chem

See Iron, Total  

  24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
FE Saturation
{
Iron, % Saturation}
(SAT)
Chem

See Iron, % Saturation

   
FE Urine, {Iron, Urine}
(IRONU)
Ref 24hr urine collection in Bottle Type I    ARUP Test Directory Mailout: 5-7 days
Fecal Fat, Quantitative
(FFATQ)
Ref 48-72 hour stool collection.  Obtain weighed container from Central Processing.  ARUP Test Directory Mailout: 5-7 days

Fecal Occult Blood, Stool(OBLD)

Micro Stool transported in sterile, no additive, leak proof container Negative

Daily

Results: Same day

 

Fecal Leukocytes
(FWBC)
Micro Stool transported in sterile, no additive, leakproof container Negative Daily, 7am-11pm
Result: Same day
FEP [Free  Erythrocyte Protoporphyrin]
(FEPP)
Ref 7 ml blood, 1 dark blue top, or one 5 ml lavendar top  ARUP Test Directory
Mailout: 5-7 days
Ferritin
(FERR)
Chem 5 ml blood, 1 Light Green Female: 11-306 μg/dL
Male: 24-336  μg/dL
24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
Fetal Fibronectin
(FFIB)
Chem Cervical swab.  To order collection kits, contact the Chemistry supervisor Normal = Negative
 
24 hrs/ 7 days
Results: 1
hr
 
Fetal Hemoglobin
[Hemoglobin F Quant]
Ref 5 ml blood, 1 LT  MAYO Reference Services Mailout: 5-7 days
Fetal Hemoglobin Stain
{
Kleihauer-Betke}
(KLST1)
Heme 3.0 ml blood, 1 LT 
 
Interpretive Report.
If stain is ordered to determine Rhogam dosage, call Path Resident (688-2820) to expedite interpretation.
24 hrs/ 7 days
 
Pathologist's approval required for STAT testing
Fetal Lung Maturity Screen
(FLMS)

See
PG, Phosphatidylglycerol
       
Fetal Screen BBK 5 ml blood, 1 EDTA from mother of neonate (postpartum specimen) and order sheet initialed by blood collector.   Interpretive report.
Performed as part of a Rhogam work-up.
24hrs/7days
 
Fibrin Degradation Products
 
  See D-Dimer.    
Fibrinogen [Factor I]
(FBG)
Coag 1 BLT   197-447 mg/dL
Critical Values:
<100 or >
N/A
24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
FK506
(FK506)
Chem
See Tacrolimus
   
Flecainide
(FLECA)
Ref 7 ml blood, 1 RT
Avoid serum separators.
ARUP Test Directory Mailout: 5-7 days
Flow Cytometry Flow cytometry is the general name for a high precision technique used for rapid analysis of cells by immunofluorescence. Check individual tests for special requirements and turnaround times.  Tests include: Acute Leukemia Panel, Chronic Leukemia/Lymphoma Panel, Helper/Suppressor Panel, Immune Studies Panel, CD4, CD3, CD34, Cytoplasmic Immunoglobulins vs DNA, and Plasma Cell Phenotype. 

 

Flurazepam
 
Ref 7 ml blood, 1 RT ARUP Test Directory Mailout: 5-7 days
Folate
(FOL)
Chem 5 ml blood, 1 Light Green 
 
5.9->22.3 ng/mL

Reference interval is for populations with diet including folate-fortified foods.  Serum folate concentrations of less than 4 ng/mL have been considered to represent deficiency.  This folate assay implemented on 2/14/2012, is traceable to the WHO International folate standard.
24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
Folate, RBC

 

Ref 1 Tall lavender EDTA tube
Minimum sample: 1ml

Freeze in amber tube
ARUP Test Directory Mailout: M-F
Free  Erythrocyte Protoporphyrin {FEP}
(FEPP)
Ref 7 ml blood, 1 dark blue top, or one 5 ml lavendar top  ARUP Test Directory
Mailout: 5-7 days
Free Light Chains
(FRLC)
Includes Kappa free light chains, Lambda free light chains, and Kappa free/Lambda free Ratio, and Lambda free/Kappa free ratio.
Immu 5 ml blood, 1 Gold Top Kappa free: .33-1.94 mg/dL
Lambda free: .57-2.63 mg/dL
K:L Ratio: 0.26 -1.65
L:K Ratio:  0.61 - 3.85
M-F
Results: 24-48 hrs
Free T3
(FT3)
Chem

See T3, Free

   
Free T4
(FT4)
Chem

See T4, Free 

   
Free Testosterone Profile
(FRTST)
Ref 5 ml blood, 1 Gold Top
Separate serum from cells ASAP
ARUP Test Directory Mailout: 5-7 days
Free Thyroxine Index
(T7)   
Chem 5 ml blood, 1 Light Green  1.4 - 5.0

FTI=  T4 x %Uptake
              100

24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
Fructosamine
(FRUC)
Ref 5 ml blood, 1 Gold Top
Hemolysis may cause falsely elevated results
ARUP Test Directory Mailout: 5-7 days
FSH  [Follicle Stimulating Hormone]
(FSH2)
Chem 5 ml blood, 1 Light Green Males: 1.27-19.26 mIU/mL

Females:(mIU/mL)
Postmenopausal:16.74-113.59
Mid-Follicular:3.85-8.78
Mid cycle: 4.54-22.51
Mid-Luteal Phase: 1.79-5.12

M, W, F

Fungal Serology, Complement Fixation Ref 6 ml blood, 1 Gold Top ARUP Test Directory Mailout: 5-7 days
Fungual Culture
(FNCLT)

Micro

Sterile, no additive, leakproof container. 

(Swabs are not acceptable and will be rejected.)

(Fungal smear included.) 

Negative

Physician will be called for cultures exhibiting mould growth.
Daily
Results: 4 weeks

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Updated 10.4.2013