HIV Ab/p24 Ag with Reflex (LABCORP)

Test Code

99901000354

Alias/See Also

LAB4440056: Prenatal Panel
LAB4027: BBF Exposure
LAB4047: HIV Ag w/HIV 1 & 2 Abs Screen w/reflex
LAB4079: Prenatal without CBC
LAB4095: Employee Exposure Package
LAB4096: Exposure Panel
LAB4108: Prenatal with HIV
LAB4109: Sexual Assault Panel
LAB4047A: HIV1,2 Antigen/Antibody Combo Screen
LAB3042: STD Panel
LAB4440026: HIV LDRP Only (Admission Patient Lab) | LABCORP EAP: 083935

CPT Codes
G0475x1

Preferred Specimen

LABCORP LAB: Serum Separator Tube (Refrigerated) Min Vol: 2

Other Acceptable Specimens

LABCORP LAB: YELLOW TOP: (Refrigerated) Min Vol: 2
LABCORP LAB: MICRO YELLOW: (Refrigerated) Min Vol: 2
LABCORP LAB: RED TOP - PLAIN: (Refrigerated) Min Vol: 2

Instructions

Sample must be processed within 1 hour Adults: 7mL lavender top-EDTA *Minimum: 4mL lavender top-EDTA* Patient Preparation: Patient should not be smoking for four to six hours. Walnuts, bananas, and ?-methyldopa (Aldomet®) should be avoided for a week prior to sampling. Other drug interference may occur, including epinephrine and epinephrine-like drugs (eg, nosedrops, sinus and cough preparations, bronchodilators, appetite suppressants). Test is unreliable in subjects on levodopa or methenamine mandelate. Avoid patient stress.2 An indwelling heparinized venous catheter is advocated, since venipuncture can cause an increase in the substances for which testing is being done. Patient should remain supine in quiet surroundings for at least 30 minutes.

Transport Temperature

Test Includes: Plasma catecholamines, fractionated (dopamine, epinephrine, norepinephrine) Specimen: Plasma, frozen Volume: 3 mL (plasma) Minimum Volume: 2.2 mL (plasma) Container: Lavender-top (EDTA) tube or green-top (heparin) tube Collection: Draw blood in lavender-top (EDTA) tube or green-top (heparin) tube. Invert to mix with preservatives. Centrifuge and transfer the plasma to labeled plastic transport tube. Freeze immediately (within one hour after collection) at -20°C and ship frozen. The time between blood collection and the preparation of plasma is quite critical; if the time exceeds one hour, catecholamine values increase (when blood is kept at 4°C) or decrease (when left at 20°C).1 To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested. Storage Instructions: Freeze

Report Available

LABCORP LAB
STAT: 5760 min
Routine: 5760 min
Extended TAT: No TAT min
Timed: 5760 min
Life or Death: 5760 min

Last Updated: March 6, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.