PTT Elevation Diagnostic Panel | Cleveland Clinic Laboratories

PTT Elevation Diagnostic Panel Print

Test Mnemonic

PTTEPL

CPT Codes

85610 - QTY (1)
85732 - QTY (2)
85520 - QTY (1)
85670 - QTY (1)
85730 - QTY (1)
85390 - QTY (1)

Aliases

Elevated PTT Diag Panel

Performing Laboratory

Cleveland Clinic Laboratories

Specimen Requirements

Volume	Type	Container	Collect Temperature	Transport Temperature	Special Instructions
6 mL	Plasma	Sodium citrate (Lt. Blue)		Frozen

Stability

Environmental Condition	Description
Ambient	4 hours
Refrigerated	Unacceptable
Frozen	14 days at -20 C; 6 months at -70 C

Days Performed

Mon - Fri

Turnaround Time

1 - 3 days

Methodology

Name	Description
Refer to individual components

Reference Range

APTT Screen
Sex	Age From	Age To	Type	Range	Range Unit
	Days	1 Days	Normal	28.2-47.4	sec
	1 Months	3 Months	Normal	21.7-43.5	sec
	2 Days	5 Days	Normal	22.9-52.0	sec
	6 Days	30 Days	Normal	23.1-48.0	sec
	4 Months	11 Months	Normal	25.3-37.3	sec
	1 Years	5 Years	Normal	21.3-31.6	sec
	6 Years	10 Years	Normal	23.1-31.6	sec
	11 Years	16 Years	Normal	23.1-32.5	sec
	17 Years	99 Years	Normal	24.0-35.1	sec
Immediate PTT 1:1 Mix
Sex	Age From	Age To	Type	Range	Range Unit
	Years	99 Years	Normal	< 33.2	sec
Incubated PTT 1:1 Mix
Sex	Age From	Age To	Type	Range	Range Unit
	Years	99 Years	Normal	<35.0	sec
PT Screen
Sex	Age From	Age To	Type	Range	Range Unit
	Days	1 Days	Normal	< 14.9	sec
	1 Months	3 Months	Normal	< 13.3	sec
	2 Days	5 Days	Normal	< 14.3	sec
	6 Days	30 Days	Normal	< 13.4	sec
	4 Months	11 Months	Normal	< 13.0	sec
	1 Years	5 Years	Normal	< 10.7	sec
	6 Years	10 Years	Normal	< 11.3	sec
	11 Years	16 Years	Normal	< 11.2	sec
	17 Years	99 Years	Normal	< 13.1	sec
Thrombin Time
Sex	Age From	Age To	Type	Range	Range Unit
	Days	1 Days	Normal	< 17.3	sec
	2 Days	5 Days	Normal	< 17.9	sec
	6 Days	30 Days	Normal	< 17.9	sec
	1 Months	3 Months	Normal	< 18.2	sec
	4 Months	11 Months	Normal	< 19.1	sec
	1 Years	999 Years	Normal	< 18.6	sec

Special Info

Indicate clearly if patient is on heparin, coumadin, or thombolytic therapy. If tests are abnormal, the following tests may be ordered and billed: DRVVT, Platelet Neutralization, Anticardiolipin antibodies, Factors VIII, IX, XI, XII, Prekallikrein, High Molecular Weight Kininogen, von Willebrand Factor Antigen, Ristocetin Co-factor, Bethesda Assay, Fibrinogen, Fibrinogen Ag, Antithrombin, D-dimer, Reptilase, von Willebrand Factor multimers, Hexagonal Phase Phospholipid neutralization, Beta 2 Glycoprotein I antibody, Thrombin time. Submit 'Coagulation Consultation Patient History Form.'

Clinical Info

This panel is intended to assist in the diagnosis of coagulation disorders in patients with a prolonged APTT, but normal PT, whether or not there is a bleeding diathesis. Disorders that may be investigated include the lupus anticoagulant, von Willebrand disease, intrinsic pathway factor deficiencies (factors VIII, IX, XI, XII, prekallikrein, high molecular weight kininogen), coagulation factor inhibitors and anticoagulant drug effects. Note: It is recommended that the abnormal APTT be confirmed before ordering this panel.