PTT Incubated Mixing Study | Cleveland Clinic Laboratories

PTT Incubated Mixing Study Print

Test Mnemonic

PTTIM

CPT Codes

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

Aliases

APTT Incubated Mixing Study
APTT Mixing Study
CAC
CACLA
Circulating Anticoagulant
PTT Correction Study
PTT Mixing Study

Performing Laboratory

Cleveland Clinic Laboratories

Specimen Requirements

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

Minimum Specimen Requirements

Volume	Type	Container	Collect Temperature	Transport Temperature	Special Instructions
1.5 mL

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
Clot Detection

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
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

If tests are abnormal in the panel, the following tests may be ordered and billed: PTT Immediate and 1 Hour Incubated Mix (85732 x2), Factor II (85210), Factor V (85220), Factor VII (85230), Factor X (85260), Factor VIII (85247) Factor IX Assay (85250), Factor XI Assay (85270), Factor XII Assay, Reptilase Time (85635), D-Dimer (85379) & Fibrinogen Ag (85385).

Clinical Info

To distinguish a coagulation factor deficiency from an inhibitor.

Technical Brief

Mixing Study, Incubated APTT