F

Collection Tube Abbreviations

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 Value:  Positive.	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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