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, IX, X, XI, XII, XIII  VA 2 BLT on ice.  Call coag lab (686-5647) before collecting specimen.
 
See  VA on-line lab manual for individual test information. Mailout: 2-3 days
Factor VIII Assay
(FVIII)
VA 2 Blue Tops on ice
 
50 -150% 24hrs/7days
Results: 3 hours
Factor XIII Assay
(FAC13)
VA BLT
See the
VA on-line lab manual for more information.
50 -150% Mailout: 2 days
Fatty Acids, Free
 
Ref 6 ml blood, 1 Gold Top
Freeze serum
Interpretive report Mailout: 5-7 days
ARUP
FE {Iron, Total}
(IRON)
Chem

See Iron, Total  

  24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
FEB Panel
{
Iron Binding Capacity}
(FEB2) 
Includes:  FE, Trans, TIBC, and FE % Sat
Chem 5 ml blood, 1 Light Green

 

  24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
FE Saturation
{
Iron, % Saturation}
(SAT)
Chem 5 ml blood, 1 Light Green

See Iron, % Saturation

Females: 9 - 55% 
Males: 13 - 59%
24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
FE Urine, {Iron, Urine}
(IRONU)
Ref 24hr urine collection in Bottle Type I    By report Mailout: 5-7 days
ARUP
Fecal Fat, Quantitative
(FFATQ)
Ref 48-72 hour stool collection.  Obtain weighed container from Central Processing.  0-5 yrs: 0.0-2.0 g/day
6 yrs and older:
0.0-6.0 g/day
Mailout: 5-7 days
ARUP

Fecal Occult Blood, Stool

(OBLD)

 

Micro Stool transported in sterile, no additive, leakproof 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  0-6 yrs: 0 -35 µg/dL
>6 yrs:  0 -60 µgdL

Mailout: 5-7 days
ARUP
Ferritin
(FERR)
Chem 5 ml blood, 1 Light Green Female: 10.0 - 291.0 ng/mL
Male: 22.0 - 322.0  ng/mL
24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
Fetal Fibronectin
(FFIB)
Peds Lab Cervical swab.  Contact the Peds Lab for specimen collection information, 686-7560 ext 1218 Normal = Negative
Critical ValuePositive.
 
24 hrs/ 7 days
Results: 1
hr
 
Fetal Hemoglobin
[Hemoglobin F Quant]
Ref 5 ml blood, 1 LT  Interpretive report (MAYO) Mailout: 5-7 days
Fetal Hemoglobin Stain
{
Kleihauer-Betke}
(KLST)
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.
Daily, 7am-9pm. Results: 4 hrs
Fetal Lung Maturity Screen
(FLMS)
Chem 5-10 ml of amniotic fluid Sample should be protected from light and extremes of temperature.
Low = <40 mg/g
Indeterminate = 40-55 mg/g
Mature = >55 mg/g
24 hrs/ 7 days
Results: 3 hrs
STAT: 3 hrs

 
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.
Thera: 0.20 -1.00 µg/mL
Toxic: >1.50 µg/mL
Mailout: 5-7 days
ARUP

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. 

Fluorescent Treponemal Antibody-IgG
(FTAB)
Ref      
Fluorescent Treponemal Antibody-IgM
 
  Test no longer available.
See Treponema pallidum - IgM antibody
   
Flurazepam
 
Ref 7 ml blood, 1 RT 0.01-0.14 µg/mL based on normal dosages
Toxic: >3.0 µg/mL
Mailout: 5-7 days
ARUP
Folate
(FOL)
Chem 5 ml blood, 1 Light Green 
Protect from light. wrap in paper or aluminum foil 
6.59-20.0 ng/mL
<3.0 may indicate deficiency
24 hrs/ 7 days
Results:
2 hrs
STAT: 1 hr
Folate, RBC
(RCFOL)

 

Ref 5 ml blood, 1 LT
Hematocrit must be performed and indicated on the request form
145 - 500 ng/mL Mailout 5-7 days
ARUP
Free  Erythrocyte Protoporphyrin {FEP}
(FEPP)
Ref 7 ml blood, 1 dark blue top, or one 5 ml lavendar top  0-6 yrs: 0 -35 µg/dL
>6 yrs:  0 -60 µgdL

Mailout: 5-7 days
ARUP
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
Interpretive report Mailout: 5-7 days
ARUP
Free Thyroxine Index
(T7)   
Chem 5 ml blood, 1 Light Green  1.4 - 3.1 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
Non-diabetic: 0-285 µmol/L.  Levels may be influenced by serum protein levels Mailout: 5-7 days
ARUP
FSH  [Follicle Stimulating Hormone]
(FSH2)
Chem 5 ml blood, 1 Light Green Males: 1.27-19.26 mIU/mL

Females:  (in mIU/mL)
Postmenopausal: 16.74-113.59
Follicular: 3.85-8.78
Mid cycle: 4.54-22.52
Luteal Phase: 1.79-5.12
24 hrs/ 7days
Results: 2 hrs
STAT: 1 hr
Fungal Serology, Complement Fixation Ref 6 ml blood, 1 Gold Top Negative if titer <1:8
Includes Aspergillus, Blastomyces, Coccidioides, Histoplasma
Mailout: 5-7 days
ARUP
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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