Culture, Sputum

Culture, Sputum

Price $59
Test Benefits

Isolate and identify potentially pathogenic organisms from throat, sinus etc; evaluate pharyngitis; evaluate nares for staph. Thrush, oral candidiasis, and Candida esophagitis frequently complicate antineoplastic therapy, hyperalimentation, transplantation immunosuppression, pregnancy, and the acquired immunodeficiency syndrome (AIDS). In addition to a fungal culture, a saline wet preparation, Gram stain, or KOH preparation demonstrating yeast cells or pseudohyphae may also be useful in rapidly establishing the diagnosis of oral or mucocutaneous candidiasis.Streptococcus pyogenes: (group A hemolytic strep) and other -hemolytic streptococci in groups B, C, D, and G are generally susceptible to penicillin and its derivatives, therefore, susceptibility need not be routinely determined. The principal reason for considering an alternative drug for individual patients is allergy to penicillin. Erythromycin, a cephalosporin, or clindamycin might be substituted in these cases. Patients allergic to penicillins may also be allergic to cephalosporins.In the late 1980s a resurgence of serious Streptococcus pyogenes infection was observed. Complications including rheumatic fever, sepsis, severe soft tissue invasion, and toxic shock-like syndrome (TSLS) are reported to be most common with the M1 serotype and a unique invasive clone has become the predominant cause of severe streptococcal infections.3Ear: Normal flora of the skin of the healthy ear includes Staphylococcus epidermidis, Corynebacterium sp, and Staphylococcus aureus. Correlation of nasopharyngeal cultures with results of tympanocentesis culture is poor and lacks predictive value in identification of the causative agent of otitis media. In decreasing order of frequency, the following organisms have been recovered from tympanocentesis: S pneumoniae (50% to 75%), H influenzae (10% to 30%), Moraxella (Branhamella) catarrhalis (5% to 10%), Streptococcus pyogenes (5% to 10%), Staphylococcus aureus (1% to 5%), Pseudomonas aeruginosa (0.1% to 1%). E coli, Klebsiella pneumoniae, Pseudomonas aeruginosa may be isolated from neonates. In therapeutic failures, S aureus, and P aeruginosa are most frequently recovered. Tympanocentesis is not usually performed in primary infections. It is to be considered in treatment failures and neonates. Candida superinfection may complicate therapy for recurring ear infections and may be a cause of persistent otorrhea. Otitis externa is frequently caused by P aeruginosa and less frequently by Candida sp, Proteus sp, S aureus, and Trichophyton sp.


Culture; isolation of potential aerobic pathogens, identification (additional charges/CPT code[s] may apply), and susceptibility testing if culture results warrant (additional charges/CPT code[s] may apply). CPT coding for microbiology and virology procedures often cannot be determined before the culture is performed. Requests with only a written order and no test number indicated will be processed according to Default Testing for Routine Microbiology.

Special Instruction

Throat swab, nasopharynx swab, nares swab, ear swab. Throat: Depress tongue and rub swab vigorously over each tonsillar area and posterior pharynx. Any exudate should be touched, and care should be taken to avoid the tongue and uvula. Expectorate sputum into sterile cup or container

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